23949690 has 32 divisors (see below), whose sum is σ = 60505920. Its totient is φ = 6050304.

The previous prime is 23949661. The next prime is 23949691. The reversal of 23949690 is 9694932.

It is a super-2 number, since 2×23949690² = 1147175302192200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23949691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20439 + ... + 21578.

It is an arithmetic number, because the mean of its divisors is an integer number (1890810).

Almost surely, 2^23949690 is an apocalyptic number.

23949690 is an abundant number, since it is smaller than the sum of its proper divisors (36556230).

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

23949690 is a wasteful number, since it uses less digits than its factorization.

23949690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42046.

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 23949690 is about 4893.8420489427. The cubic root of 23949690 is about 288.2482186837.

The spelling of 23949690 in words is "twenty-three million, nine hundred forty-nine thousand, six hundred ninety".