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89870748 = 223112692531
BaseRepresentation
bin1010101101101…
…01000110011100
320021002220111020
411112311012130
5141001330443
612530124140
72140613562
oct526650634
9207086436
1089870748
1146803250
1226120650
1315808176
14bd15a32
157d53583
hex55b519c

89870748 has 48 divisors (see below), whose sum is σ = 229703040. Its totient is φ = 27121600.

The previous prime is 89870719. The next prime is 89870749. The reversal of 89870748 is 84707898.

It is a self number, because there is not a number n which added to its sum of digits gives 89870748.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89870749) 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, 34243 + ... + 36773.

It is an arithmetic number, because the mean of its divisors is an integer number (4785480).

Almost surely, 289870748 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89870748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114851520).

89870748 is an abundant number, since it is smaller than the sum of its proper divisors (139832292).

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

89870748 is a wasteful number, since it uses less digits than its factorization.

89870748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2818 (or 2816 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 51.

The square root of 89870748 is about 9480.0183544126. The cubic root of 89870748 is about 447.9258420513.

The spelling of 89870748 in words is "eighty-nine million, eight hundred seventy thousand, seven hundred forty-eight".

Divisors: 1 2 3 4 6 11 12 22 33 44 66 132 269 538 807 1076 1614 2531 2959 3228 5062 5918 7593 8877 10124 11836 15186 17754 27841 30372 35508 55682 83523 111364 167046 334092 680839 1361678 2042517 2723356 4085034 7489229 8170068 14978458 22467687 29956916 44935374 89870748