23897942 has 4 divisors (see below), whose sum is σ = 35846916. Its totient is φ = 11948970.

The previous prime is 23897927. The next prime is 23897947. The reversal of 23897942 is 24979832.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×23897942² = 1142223263670728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23897893 and 23897902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23897947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5974484 + ... + 5974487.

It is an arithmetic number, because the mean of its divisors is an integer number (8961729).

Almost surely, 2^23897942 is an apocalyptic number.

23897942 is a deficient number, since it is larger than the sum of its proper divisors (11948974).

23897942 is a wasteful number, since it uses less digits than its factorization.

23897942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11948973.

The product of its digits is 217728, while the sum is 44.

The square root of 23897942 is about 4888.5521373920. The cubic root of 23897942 is about 288.0404633862.

The spelling of 23897942 in words is "twenty-three million, eight hundred ninety-seven thousand, nine hundred forty-two".