23957690 has 8 divisors (see below), whose sum is σ = 43123860. Its totient is φ = 9583072.

The previous prime is 23957677. The next prime is 23957693. The reversal of 23957690 is 9675932.

It can be written as a sum of positive squares in 2 ways, for example, as 23512801 + 444889 = 4849^2 + 667^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×23957690² = 1147941820272200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23957693) 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 3 ways as a sum of consecutive naturals, for example, 1197875 + ... + 1197894.

Almost surely, 2^23957690 is an apocalyptic number.

23957690 is a deficient number, since it is larger than the sum of its proper divisors (19166170).

23957690 is a wasteful number, since it uses less digits than its factorization.

23957690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2395776.

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 23957690 is about 4894.6593344175. The cubic root of 23957690 is about 288.2803099694.

The spelling of 23957690 in words is "twenty-three million, nine hundred fifty-seven thousand, six hundred ninety".