72277760 has 36 divisors (see below), whose sum is σ = 173130888. Its totient is φ = 28910592.

The previous prime is 72277757. The next prime is 72277769. The reversal of 72277760 is 6777227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72277769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26954 + ... + 29513.

Almost surely, 2^72277760 is an apocalyptic number.

It is an amenable number.

72277760 is an abundant number, since it is smaller than the sum of its proper divisors (100853128).

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

72277760 is an equidigital number, since it uses as much as digits as its factorization.

72277760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56488 (or 56474 counting only the distinct ones).

The product of its (nonzero) digits is 57624, while the sum is 38.

The square root of 72277760 is about 8501.6327843538. The cubic root of 72277760 is about 416.5510448966.

It can be divided in two parts, 72277 and 760, that added together give a palindrome (73037).

The spelling of 72277760 in words is "seventy-two million, two hundred seventy-seven thousand, seven hundred sixty".