23019256 has 32 divisors (see below), whose sum is σ = 46746000. Its totient is φ = 10563840.

The previous prime is 23019247. The next prime is 23019277. The reversal of 23019256 is 65291032.

It is a super-2 number, since 2×23019256² = 1059772293587072, which contains 22 as substring.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21420 + ... + 22468.

Almost surely, 2^23019256 is an apocalyptic number.

23019256 is a gapful number since it is divisible by the number (26) 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 23019256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23373000).

23019256 is an abundant number, since it is smaller than the sum of its proper divisors (23726744).

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

23019256 is a wasteful number, since it uses less digits than its factorization.

23019256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279 (or 1275 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 23019256 is about 4797.8386800725. The cubic root of 23019256 is about 284.4660403435.

The spelling of 23019256 in words is "twenty-three million, nineteen thousand, two hundred fifty-six".