15552428 has 6 divisors (see below), whose sum is σ = 27216756. Its totient is φ = 7776212.

The previous prime is 15552413. The next prime is 15552437. The reversal of 15552428 is 82425551.

It is a junction number, because it is equal to n+sod(n) for n = 15552394 and 15552403.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1944050 + ... + 1944057.

It is an arithmetic number, because the mean of its divisors is an integer number (4536126).

Almost surely, 2^15552428 is an apocalyptic number.

It is an amenable number.

15552428 is a deficient number, since it is larger than the sum of its proper divisors (11664328).

15552428 is a wasteful number, since it uses less digits than its factorization.

15552428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3888111 (or 3888109 counting only the distinct ones).

The product of its digits is 16000, while the sum is 32.

The square root of 15552428 is about 3943.6566787691. The cubic root of 15552428 is about 249.6123485494.

Adding to 15552428 its reverse (82425551), we get a palindrome (97977979).

The spelling of 15552428 in words is "fifteen million, five hundred fifty-two thousand, four hundred twenty-eight".