52782780 has 24 divisors (see below), whose sum is σ = 147791952. Its totient is φ = 14075392.

The previous prime is 52782767. The next prime is 52782799. The reversal of 52782780 is 8728725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439797 + ... + 439916.

It is an arithmetic number, because the mean of its divisors is an integer number (6157998).

Almost surely, 2^52782780 is an apocalyptic number.

It is an amenable number.

52782780 is an abundant number, since it is smaller than the sum of its proper divisors (95009172).

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

52782780 is a wasteful number, since it uses less digits than its factorization.

52782780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879725 (or 879723 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 39.

The square root of 52782780 is about 7265.1758409553. The cubic root of 52782780 is about 375.1147026896.

The spelling of 52782780 in words is "fifty-two million, seven hundred eighty-two thousand, seven hundred eighty".