23725642 has 24 divisors (see below), whose sum is σ = 39790116. Its totient is φ = 10571904.

The previous prime is 23725613. The next prime is 23725643. The reversal of 23725642 is 24652732.

It can be written as a sum of positive squares in 2 ways, for example, as 22382361 + 1343281 = 4731^2 + 1159^2 .

It is not an unprimeable number, because it can be changed into a prime (23725643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11308 + ... + 13240.

Almost surely, 2^23725642 is an apocalyptic number.

23725642 is a deficient number, since it is larger than the sum of its proper divisors (16064474).

23725642 is a wasteful number, since it uses less digits than its factorization.

23725642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990 (or 1971 counting only the distinct ones).

The product of its digits is 20160, while the sum is 31.

The square root of 23725642 is about 4870.8974532421. The cubic root of 23725642 is about 287.3465525195.

The spelling of 23725642 in words is "twenty-three million, seven hundred twenty-five thousand, six hundred forty-two".