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88408240 = 2452953719
BaseRepresentation
bin1010100010100…
…00000010110000
320011100121022021
411101100002300
5140113030430
612434521224
72122312654
oct521200260
9204317267
1088408240
11459a4468
1225736214
131541558b
14ba54a64
157b6507a
hex54500b0

88408240 has 80 divisors (see below), whose sum is σ = 216950400. Its totient is φ = 33453056.

The previous prime is 88408231. The next prime is 88408247. The reversal of 88408240 is 4280488.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 88408196 and 88408205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88408247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122601 + ... + 123319.

It is an arithmetic number, because the mean of its divisors is an integer number (2711880).

Almost surely, 288408240 is an apocalyptic number.

88408240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 88408240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108475200).

88408240 is an abundant number, since it is smaller than the sum of its proper divisors (128542160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

88408240 is a wasteful number, since it uses less digits than its factorization.

88408240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814 (or 808 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 34.

The square root of 88408240 is about 9402.5656073223. The cubic root of 88408240 is about 445.4827736204.

The spelling of 88408240 in words is "eighty-eight million, four hundred eight thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 16 20 29 40 53 58 80 106 116 145 212 232 265 290 424 464 530 580 719 848 1060 1160 1438 1537 2120 2320 2876 3074 3595 4240 5752 6148 7190 7685 11504 12296 14380 15370 20851 24592 28760 30740 38107 41702 57520 61480 76214 83404 104255 122960 152428 166808 190535 208510 304856 333616 381070 417020 609712 762140 834040 1105103 1524280 1668080 2210206 3048560 4420412 5525515 8840824 11051030 17681648 22102060 44204120 88408240