52486728 has 64 divisors (see below), whose sum is σ = 152232960. Its totient is φ = 14769216.

The previous prime is 52486697. The next prime is 52486729. The reversal of 52486728 is 82768425.

It is a happy number.

It is a super-2 number, since 2×52486728² = 5509713232291968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 52486728.

It is not an unprimeable number, because it can be changed into a prime (52486729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8925 + ... + 13587.

It is an arithmetic number, because the mean of its divisors is an integer number (2378640).

Almost surely, 2^52486728 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 52486728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76116480).

52486728 is an abundant number, since it is smaller than the sum of its proper divisors (99746232).

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

52486728 is a wasteful number, since it uses less digits than its factorization.

52486728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4746 (or 4742 counting only the distinct ones).

The product of its digits is 215040, while the sum is 42.

The square root of 52486728 is about 7244.7724601950. The cubic root of 52486728 is about 374.4120635860.

The spelling of 52486728 in words is "fifty-two million, four hundred eighty-six thousand, seven hundred twenty-eight".