72704896 has 32 divisors (see below), whose sum is σ = 158012280. Its totient is φ = 33047040.

The previous prime is 72704893. The next prime is 72704917. The reversal of 72704896 is 69840727.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72704893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24411 + ... + 27226.

Almost surely, 2^72704896 is an apocalyptic number.

It is an amenable number.

72704896 is an abundant number, since it is smaller than the sum of its proper divisors (85307384).

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

72704896 is a wasteful number, since it uses less digits than its factorization.

72704896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51662 (or 51650 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 72704896 is about 8526.7166013654. The cubic root of 72704896 is about 417.3699902361.

The spelling of 72704896 in words is "seventy-two million, seven hundred four thousand, eight hundred ninety-six".