72770500 has 96 divisors (see below), whose sum is σ = 176432256. Its totient is φ = 26000000.

The previous prime is 72770479. The next prime is 72770501. The reversal of 72770500 is 507727.

It is a happy number.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (72770501) 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, 555435 + ... + 555565.

It is an arithmetic number, because the mean of its divisors is an integer number (1837836).

Almost surely, 2^72770500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72770500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88216128).

72770500 is an abundant number, since it is smaller than the sum of its proper divisors (103661756).

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

72770500 is a wasteful number, since it uses less digits than its factorization.

72770500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 3430, while the sum is 28.

The square root of 72770500 is about 8530.5627012525. The cubic root of 72770500 is about 417.4954880170.

The spelling of 72770500 in words is "seventy-two million, seven hundred seventy thousand, five hundred".