23013810 has 24 divisors (see below), whose sum is σ = 59836140. Its totient is φ = 6136992.

The previous prime is 23013799. The next prime is 23013821. The reversal of 23013810 is 1831032.

It is an interprime number because it is at equal distance from previous prime (23013799) and next prime (23013821).

It can be written as a sum of positive squares in 2 ways, for example, as 23011209 + 2601 = 4797^2 + 51^2 .

It is a super-2 number, since 2×23013810² = 1059270901432200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 127765 + ... + 127944.

Almost surely, 2^23013810 is an apocalyptic number.

23013810 is an abundant number, since it is smaller than the sum of its proper divisors (36822330).

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

23013810 is a wasteful number, since it uses less digits than its factorization.

23013810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255722 (or 255719 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 23013810 is about 4797.2710992813. The cubic root of 23013810 is about 284.4436051521.

Adding to 23013810 its reverse (1831032), we get a palindrome (24844842).

The spelling of 23013810 in words is "twenty-three million, thirteen thousand, eight hundred ten".