72770572 has 24 divisors (see below), whose sum is σ = 149093280. Its totient is φ = 30426240.

The previous prime is 72770569. The next prime is 72770573. The reversal of 72770572 is 27507727.

It is a super-2 number, since 2×72770572² = 10591112298414368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72770573) 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, 30547 + ... + 32842.

It is an arithmetic number, because the mean of its divisors is an integer number (6212220).

Almost surely, 2^72770572 is an apocalyptic number.

It is an amenable number.

72770572 is an abundant number, since it is smaller than the sum of its proper divisors (76322708).

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

72770572 is a wasteful number, since it uses less digits than its factorization.

72770572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63441 (or 63439 counting only the distinct ones).

The product of its (nonzero) digits is 48020, while the sum is 37.

The square root of 72770572 is about 8530.5669213716. The cubic root of 72770572 is about 417.4956257086.

The spelling of 72770572 in words is "seventy-two million, seven hundred seventy thousand, five hundred seventy-two".