72470727 has 32 divisors (see below), whose sum is σ = 123200000. Its totient is φ = 41243904.

The previous prime is 72470719. The next prime is 72470747. The reversal of 72470727 is 72707427.

It is not a de Polignac number, because 72470727 - 2³ = 72470719 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 72470691 and 72470700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72470707) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57399 + ... + 58647.

It is an arithmetic number, because the mean of its divisors is an integer number (3850000).

Almost surely, 2^72470727 is an apocalyptic number.

72470727 is a deficient number, since it is larger than the sum of its proper divisors (50729273).

72470727 is a wasteful number, since it uses less digits than its factorization.

72470727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572 (or 1566 counting only the distinct ones).

The product of its (nonzero) digits is 38416, while the sum is 36.

The square root of 72470727 is about 8512.9740396644. The cubic root of 72470727 is about 416.9214178305.

The spelling of 72470727 in words is "seventy-two million, four hundred seventy thousand, seven hundred twenty-seven".