72670740 has 24 divisors (see below), whose sum is σ = 203478240. Its totient is φ = 19378848.

The previous prime is 72670709. The next prime is 72670753. The reversal of 72670740 is 4707627.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 605530 + ... + 605649.

It is an arithmetic number, because the mean of its divisors is an integer number (8478260).

Almost surely, 2^72670740 is an apocalyptic number.

It is an amenable number.

72670740 is an abundant number, since it is smaller than the sum of its proper divisors (130807500).

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

72670740 is a wasteful number, since it uses less digits than its factorization.

72670740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211191 (or 1211189 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 33.

The square root of 72670740 is about 8524.7134849214. The cubic root of 72670740 is about 417.3046213126.

The spelling of 72670740 in words is "seventy-two million, six hundred seventy thousand, seven hundred forty".