140638904 has 32 divisors (see below), whose sum is σ = 302221920. Its totient is φ = 60103296.

The previous prime is 140638903. The next prime is 140638913. The reversal of 140638904 is 409836041.

140638904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140638903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17522 + ... + 24254.

It is an arithmetic number, because the mean of its divisors is an integer number (9444435).

Almost surely, 2^140638904 is an apocalyptic number.

140638904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

140638904 is an abundant number, since it is smaller than the sum of its proper divisors (161583016).

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

140638904 is a wasteful number, since it uses less digits than its factorization.

140638904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7119 (or 7115 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 140638904 is about 11859.1274552557. The cubic root of 140638904 is about 520.0380938562.

The spelling of 140638904 in words is "one hundred forty million, six hundred thirty-eight thousand, nine hundred four".