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23989488 = 243499781
BaseRepresentation
bin101101110000…
…0110011110000
31200010210101120
41123200303300
522120130423
62214102240
7410623125
oct133406360
950123346
1023989488
11125a5726
12804a980
134c7c283
14328674c
15218cee3
hex16e0cf0

23989488 has 20 divisors (see below), whose sum is σ = 61972968. Its totient is φ = 7996480.

The previous prime is 23989481. The next prime is 23989489. The reversal of 23989488 is 88498932.

It is a happy number.

It is a super-5 number, since 5×239894885 (a number of 38 digits) contains 55555 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23989488.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23989481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249843 + ... + 249938.

Almost surely, 223989488 is an apocalyptic number.

It is an amenable number.

23989488 is an abundant number, since it is smaller than the sum of its proper divisors (37983480).

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

23989488 is a wasteful number, since it uses less digits than its factorization.

23989488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499792 (or 499786 counting only the distinct ones).

The product of its digits is 995328, while the sum is 51.

The square root of 23989488 is about 4897.9064915533. The cubic root of 23989488 is about 288.4077942239.

The spelling of 23989488 in words is "twenty-three million, nine hundred eighty-nine thousand, four hundred eighty-eight".

Divisors: 1 2 3 4 6 8 12 16 24 48 499781 999562 1499343 1999124 2998686 3998248 5997372 7996496 11994744 23989488