72494770 has 16 divisors (see below), whose sum is σ = 131784408. Its totient is φ = 28710400.

The previous prime is 72494761. The next prime is 72494777. The reversal of 72494770 is 7749427.

It can be written as a sum of positive squares in 4 ways, for example, as 72063121 + 431649 = 8489^2 + 657^2 .

It is not an unprimeable number, because it can be changed into a prime (72494777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34879 + ... + 36898.

Almost surely, 2^72494770 is an apocalyptic number.

72494770 is a deficient number, since it is larger than the sum of its proper divisors (59289638).

72494770 is a wasteful number, since it uses less digits than its factorization.

72494770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71885.

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 72494770 is about 8514.3860612495. The cubic root of 72494770 is about 416.9675188965.

The spelling of 72494770 in words is "seventy-two million, four hundred ninety-four thousand, seven hundred seventy".