52078728 has 32 divisors (see below), whose sum is σ = 140212800. Its totient is φ = 16024128.

The previous prime is 52078727. The next prime is 52078777. The reversal of 52078728 is 82787025.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (52078727) 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, 83148 + ... + 83771.

It is an arithmetic number, because the mean of its divisors is an integer number (4381650).

Almost surely, 2^52078728 is an apocalyptic number.

It is an amenable number.

52078728 is an abundant number, since it is smaller than the sum of its proper divisors (88134072).

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

52078728 is a wasteful number, since it uses less digits than its factorization.

52078728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166941 (or 166937 counting only the distinct ones).

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

The square root of 52078728 is about 7216.5592909641. The cubic root of 52078728 is about 373.4393880952.

The spelling of 52078728 in words is "fifty-two million, seventy-eight thousand, seven hundred twenty-eight".