72994870 has 32 divisors (see below), whose sum is σ = 147655872. Its totient is φ = 25779072.

The previous prime is 72994849. The next prime is 72994871. The reversal of 72994870 is 7849927.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 72994870.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72994871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9217 + ... + 15196.

It is an arithmetic number, because the mean of its divisors is an integer number (4614246).

Almost surely, 2^72994870 is an apocalyptic number.

72994870 is an abundant number, since it is smaller than the sum of its proper divisors (74661002).

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

72994870 is a wasteful number, since it uses less digits than its factorization.

72994870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24456.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 72994870 is about 8543.7035295005. The cubic root of 72994870 is about 417.9241294498.

The spelling of 72994870 in words is "seventy-two million, nine hundred ninety-four thousand, eight hundred seventy".