52402638 has 32 divisors (see below), whose sum is σ = 108358272. Its totient is φ = 16884000.

The previous prime is 52402621. The next prime is 52402639. The reversal of 52402638 is 83620425.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52402639) 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, 25053 + ... + 27063.

It is an arithmetic number, because the mean of its divisors is an integer number (3386196).

Almost surely, 2^52402638 is an apocalyptic number.

52402638 is an abundant number, since it is smaller than the sum of its proper divisors (55955634).

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

52402638 is a wasteful number, since it uses less digits than its factorization.

52402638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 52402638 is about 7238.9666389617. The cubic root of 52402638 is about 374.2120057779.

The spelling of 52402638 in words is "fifty-two million, four hundred two thousand, six hundred thirty-eight".