71339904 has 48 divisors (see below), whose sum is σ = 205291320. Its totient is φ = 23779584.

The previous prime is 71339893. The next prime is 71339929. The reversal of 71339904 is 40993317.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29812 + ... + 32115.

Almost surely, 2^71339904 is an apocalyptic number.

It is an amenable number.

71339904 is an abundant number, since it is smaller than the sum of its proper divisors (133951416).

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

71339904 is a wasteful number, since it uses less digits than its factorization.

71339904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61947 (or 61932 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 71339904 is about 8446.2952825484. The cubic root of 71339904 is about 414.7415122300.

The spelling of 71339904 in words is "seventy-one million, three hundred thirty-nine thousand, nine hundred four".