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88743040 = 275138661
BaseRepresentation
bin1010100101000…
…01110010000000
320011222121120021
411102201302000
5140204234130
612450023224
72125206031
oct522416200
9204877507
1088743040
1146102a61
1225877b14
1315501a99
14bb00a88
157bce37a
hex54a1c80

88743040 has 32 divisors (see below), whose sum is σ = 212152860. Its totient is φ = 35496960.

The previous prime is 88743037. The next prime is 88743119. The reversal of 88743040 is 4034788.

It can be written as a sum of positive squares in 2 ways, for example, as 85673536 + 3069504 = 9256^2 + 1752^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 88742987 and 88743005.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68691 + ... + 69970.

Almost surely, 288743040 is an apocalyptic number.

88743040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

88743040 is an abundant number, since it is smaller than the sum of its proper divisors (123409820).

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

88743040 is a wasteful number, since it uses less digits than its factorization.

88743040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138680 (or 138668 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 88743040 is about 9420.3524350207. The cubic root of 88743040 is about 446.0444096354.

The spelling of 88743040 in words is "eighty-eight million, seven hundred forty-three thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 128 160 320 640 138661 277322 554644 693305 1109288 1386610 2218576 2773220 4437152 5546440 8874304 11092880 17748608 22185760 44371520 88743040