52638970 has 32 divisors (see below), whose sum is σ = 100699200. Its totient is φ = 19742976.

The previous prime is 52638959. The next prime is 52638977. The reversal of 52638970 is 7983625.

It is a super-2 number, since 2×52638970² = 5541722325321800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52638977) 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, 70861 + ... + 71599.

It is an arithmetic number, because the mean of its divisors is an integer number (3146850).

Almost surely, 2^52638970 is an apocalyptic number.

52638970 is a deficient number, since it is larger than the sum of its proper divisors (48060230).

52638970 is a wasteful number, since it uses less digits than its factorization.

52638970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 52638970 is about 7255.2718763669. The cubic root of 52638970 is about 374.7737182999.

Subtracting from 52638970 its sum of digits (40), we obtain a triangular number (52638930 = T₁₀₂₆₀).

The spelling of 52638970 in words is "fifty-two million, six hundred thirty-eight thousand, nine hundred seventy".