71248404 has 36 divisors (see below), whose sum is σ = 175467264. Its totient is φ = 22498128.

The previous prime is 71248369. The next prime is 71248433. The reversal of 71248404 is 40484217.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3892 + ... + 12555.

Almost surely, 2^71248404 is an apocalyptic number.

It is an amenable number.

71248404 is an abundant number, since it is smaller than the sum of its proper divisors (104218860).

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

71248404 is a wasteful number, since it uses less digits than its factorization.

71248404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16492 (or 16471 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 71248404 is about 8440.8769686568. The cubic root of 71248404 is about 414.5641216342.

The spelling of 71248404 in words is "seventy-one million, two hundred forty-eight thousand, four hundred four".