23449240 has 32 divisors (see below), whose sum is σ = 53887680. Its totient is φ = 9179392.

The previous prime is 23449199. The next prime is 23449247. The reversal of 23449240 is 4294432.

It is a junction number, because it is equal to n+sod(n) for n = 23449199 and 23449208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23449247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4357 + ... + 8116.

It is an arithmetic number, because the mean of its divisors is an integer number (1683990).

Almost surely, 2^23449240 is an apocalyptic number.

23449240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23449240 is an abundant number, since it is smaller than the sum of its proper divisors (30438440).

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

23449240 is a wasteful number, since it uses less digits than its factorization.

23449240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12531 (or 12527 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 23449240 is about 4842.4415329460. The cubic root of 23449240 is about 286.2263355786.

The spelling of 23449240 in words is "twenty-three million, four hundred forty-nine thousand, two hundred forty".