52771728 has 20 divisors (see below), whose sum is σ = 136327088. Its totient is φ = 17590560.

The previous prime is 52771727. The next prime is 52771753. The reversal of 52771728 is 82717725.

It is a super-2 number, since 2×52771728² = 5569710552211968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52771727) 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, 549658 + ... + 549753.

Almost surely, 2^52771728 is an apocalyptic number.

It is an amenable number.

52771728 is an abundant number, since it is smaller than the sum of its proper divisors (83555360).

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

52771728 is a wasteful number, since it uses less digits than its factorization.

52771728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099422 (or 1099416 counting only the distinct ones).

The product of its digits is 54880, while the sum is 39.

The square root of 52771728 is about 7264.4151863725. The cubic root of 52771728 is about 375.0885195476.

The spelling of 52771728 in words is "fifty-two million, seven hundred seventy-one thousand, seven hundred twenty-eight".