72670480 has 20 divisors (see below), whose sum is σ = 168959052. Its totient is φ = 29068160.

The previous prime is 72670469. The next prime is 72670487. The reversal of 72670480 is 8407627.

It can be written as a sum of positive squares in 2 ways, for example, as 33131536 + 39538944 = 5756^2 + 6288^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (72670487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454111 + ... + 454270.

Almost surely, 2^72670480 is an apocalyptic number.

It is an amenable number.

72670480 is an abundant number, since it is smaller than the sum of its proper divisors (96288572).

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

72670480 is a wasteful number, since it uses less digits than its factorization.

72670480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908394 (or 908388 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 72670480 is about 8524.6982351283. The cubic root of 72670480 is about 417.3041236371.

The spelling of 72670480 in words is "seventy-two million, six hundred seventy thousand, four hundred eighty".