23018634 has 32 divisors (see below), whose sum is σ = 52920000. Its totient is φ = 7407792.

The previous prime is 23018627. The next prime is 23018659. The reversal of 23018634 is 43681032.

It is a happy number.

23018634 is a `hidden beast` number, since 23 + 0 + 1 + 8 + 634 = 666.

It is a super-2 number, since 2×23018634² = 1059715022451912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23018598 and 23018607.

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, 5784 + ... + 8915.

It is an arithmetic number, because the mean of its divisors is an integer number (1653750).

Almost surely, 2^23018634 is an apocalyptic number.

23018634 is an abundant number, since it is smaller than the sum of its proper divisors (29901366).

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

23018634 is a wasteful number, since it uses less digits than its factorization.

23018634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14739 (or 14733 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 23018634 is about 4797.7738587808. The cubic root of 23018634 is about 284.4634781484.

Adding to 23018634 its reverse (43681032), we get a palindrome (66699666).

The spelling of 23018634 in words is "twenty-three million, eighteen thousand, six hundred thirty-four".