57072276 has 120 divisors (see below), whose sum is σ = 160455680. Its totient is φ = 17635968.

The previous prime is 57072259. The next prime is 57072277. The reversal of 57072276 is 67227075.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 57072276.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57072277) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 449325 + ... + 449451.

Almost surely, 2^57072276 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 57072276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80227840).

57072276 is an abundant number, since it is smaller than the sum of its proper divisors (103383404).

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

57072276 is a wasteful number, since it uses less digits than its factorization.

57072276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 36.

The square root of 57072276 is about 7554.6195139133. The cubic root of 57072276 is about 385.0127077382.

The spelling of 57072276 in words is "fifty-seven million, seventy-two thousand, two hundred seventy-six".