53866728 has 32 divisors (see below), whose sum is σ = 149630400. Its totient is φ = 17955504.

The previous prime is 53866723. The next prime is 53866739. The reversal of 53866728 is 82766835.

It is not an unprimeable number, because it can be changed into a prime (53866723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124476 + ... + 124907.

It is an arithmetic number, because the mean of its divisors is an integer number (4675950).

Almost surely, 2^53866728 is an apocalyptic number.

It is an amenable number.

53866728 is an abundant number, since it is smaller than the sum of its proper divisors (95763672).

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

53866728 is a wasteful number, since it uses less digits than its factorization.

53866728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249398 (or 249388 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 53866728 is about 7339.3956154441. The cubic root of 53866728 is about 377.6651102951.

The spelling of 53866728 in words is "fifty-three million, eight hundred sixty-six thousand, seven hundred twenty-eight".