52453728 has 36 divisors (see below), whose sum is σ = 149166108. Its totient is φ = 17484480.

The previous prime is 52453711. The next prime is 52453741. The reversal of 52453728 is 82735425.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 52453692 and 52453701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 90778 + ... + 91353.

It is an arithmetic number, because the mean of its divisors is an integer number (4143503).

Almost surely, 2^52453728 is an apocalyptic number.

It is an amenable number.

52453728 is an abundant number, since it is smaller than the sum of its proper divisors (96712380).

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

52453728 is a wasteful number, since it uses less digits than its factorization.

52453728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182147 (or 182136 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 52453728 is about 7242.4945978578. The cubic root of 52453728 is about 374.3335790566. Note that the first 3 decimals are identical.

The spelling of 52453728 in words is "fifty-two million, four hundred fifty-three thousand, seven hundred twenty-eight".