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23089808 = 2471767181
BaseRepresentation
bin101100000010…
…1001010010000
31121110002021002
41120011022100
521402333213
62142521132
7400155140
oct130051220
947402232
1023089808
1112040795
1278961a8
134a25911
1430d0920
152061658
hex1605290

23089808 has 80 divisors (see below), whose sum is σ = 55246464. Its totient is φ = 9123840.

The previous prime is 23089789. The next prime is 23089811. The reversal of 23089808 is 80898032.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127478 + ... + 127658.

Almost surely, 223089808 is an apocalyptic number.

23089808 is a gapful number since it is divisible by the number (28) 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 23089808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27623232).

23089808 is an abundant number, since it is smaller than the sum of its proper divisors (32156656).

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

23089808 is a wasteful number, since it uses less digits than its factorization.

23089808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 23089808 is about 4805.1855323182. The cubic root of 23089808 is about 284.7563650904.

The spelling of 23089808 in words is "twenty-three million, eighty-nine thousand, eight hundred eight".

Divisors: 1 2 4 7 8 14 16 17 28 34 56 67 68 112 119 134 136 181 238 268 272 362 469 476 536 724 938 952 1072 1139 1267 1448 1876 1904 2278 2534 2896 3077 3752 4556 5068 6154 7504 7973 9112 10136 12127 12308 15946 18224 20272 21539 24254 24616 31892 43078 48508 49232 63784 84889 86156 97016 127568 169778 172312 194032 206159 339556 344624 412318 679112 824636 1358224 1443113 1649272 2886226 3298544 5772452 11544904 23089808