23947497 has 24 divisors (see below), whose sum is σ = 39985920. Its totient is φ = 13527360.

The previous prime is 23947493. The next prime is 23947499. The reversal of 23947497 is 79474932.

It is not a de Polignac number, because 23947497 - 2² = 23947493 is a prime.

It is a super-2 number, since 2×23947497² = 1146965225130018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23947493) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3472 + ... + 7742.

It is an arithmetic number, because the mean of its divisors is an integer number (1666080).

Almost surely, 2^23947497 is an apocalyptic number.

It is an amenable number.

23947497 is a deficient number, since it is larger than the sum of its proper divisors (16038423).

23947497 is a wasteful number, since it uses less digits than its factorization.

23947497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4373 (or 4370 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 23947497 is about 4893.6179867252. The cubic root of 23947497 is about 288.2394204120.

The spelling of 23947497 in words is "twenty-three million, nine hundred forty-seven thousand, four hundred ninety-seven".