15716428 has 24 divisors (see below), whose sum is σ = 33851552. Its totient is φ = 6217344.

The previous prime is 15716417. The next prime is 15716431. The reversal of 15716428 is 82461751.

It is a super-2 number, since 2×15716428² = 494012218158368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15716393 and 15716402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21225 + ... + 21952.

Almost surely, 2^15716428 is an apocalyptic number.

It is an amenable number.

15716428 is an abundant number, since it is smaller than the sum of its proper divisors (18135124).

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

15716428 is a wasteful number, since it uses less digits than its factorization.

15716428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43201 (or 43199 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The square root of 15716428 is about 3964.3950358157. The cubic root of 15716428 is about 250.4866680023.

The spelling of 15716428 in words is "fifteen million, seven hundred sixteen thousand, four hundred twenty-eight".