23951240 has 32 divisors (see below), whose sum is σ = 54454680. Its totient is φ = 9480192.

The previous prime is 23951237. The next prime is 23951281. The reversal of 23951240 is 4215932.

It can be written as a sum of positive squares in 4 ways, for example, as 10745284 + 13205956 = 3278^2 + 3634^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 794 + ... + 6966.

Almost surely, 2^23951240 is an apocalyptic number.

23951240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23951240 is an abundant number, since it is smaller than the sum of its proper divisors (30503440).

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

23951240 is a wasteful number, since it uses less digits than its factorization.

23951240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6281 (or 6277 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 23951240 is about 4894.0004086637. Note that the first 3 decimals coincide. The cubic root of 23951240 is about 288.2544369284.

The spelling of 23951240 in words is "twenty-three million, nine hundred fifty-one thousand, two hundred forty".