23971402 has 16 divisors (see below), whose sum is σ = 44255232. Its totient is φ = 9483120.

The previous prime is 23971391. The next prime is 23971403. The reversal of 23971402 is 20417932.

It is a super-2 number, since 2×23971402² = 1149256227691208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23971403) 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, 65674 + ... + 66037.

It is an arithmetic number, because the mean of its divisors is an integer number (2765952).

Almost surely, 2^23971402 is an apocalyptic number.

23971402 is a deficient number, since it is larger than the sum of its proper divisors (20283830).

23971402 is a wasteful number, since it uses less digits than its factorization.

23971402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131733.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 23971402 is about 4896.0598444055. The cubic root of 23971402 is about 288.3352978211.

The spelling of 23971402 in words is "twenty-three million, nine hundred seventy-one thousand, four hundred two".