15420052 has 6 divisors (see below), whose sum is σ = 26985098. Its totient is φ = 7710024.

The previous prime is 15420049. The next prime is 15420061. The reversal of 15420052 is 25002451.

15420052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 15256836 + 163216 = 3906^2 + 404^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1927503 + ... + 1927510.

Almost surely, 2^15420052 is an apocalyptic number.

It is an amenable number.

15420052 is a deficient number, since it is larger than the sum of its proper divisors (11565046).

15420052 is a wasteful number, since it uses less digits than its factorization.

15420052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3855017 (or 3855015 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 15420052 is about 3926.8374043242. The cubic root of 15420052 is about 248.9021297814.

The spelling of 15420052 in words is "fifteen million, four hundred twenty thousand, fifty-two".