72403284 has 12 divisors (see below), whose sum is σ = 168941024. Its totient is φ = 24134424.

The previous prime is 72403217. The next prime is 72403291. The reversal of 72403284 is 48230427.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3016792 + ... + 3016815.

Almost surely, 2^72403284 is an apocalyptic number.

It is an amenable number.

72403284 is an abundant number, since it is smaller than the sum of its proper divisors (96537740).

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

72403284 is a wasteful number, since it uses less digits than its factorization.

72403284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6033614 (or 6033612 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 72403284 is about 8509.0119285379. The cubic root of 72403284 is about 416.7920453265.

The spelling of 72403284 in words is "seventy-two million, four hundred three thousand, two hundred eighty-four".