15428564 has 6 divisors (see below), whose sum is σ = 26999994. Its totient is φ = 7714280.

The previous prime is 15428563. The next prime is 15428573. The reversal of 15428564 is 46582451.

It can be written as a sum of positive squares in only one way, i.e., 15147664 + 280900 = 3892^2 + 530^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15428563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1928567 + ... + 1928574.

It is an arithmetic number, because the mean of its divisors is an integer number (4499999).

Almost surely, 2^15428564 is an apocalyptic number.

It is an amenable number.

15428564 is a deficient number, since it is larger than the sum of its proper divisors (11571430).

15428564 is a wasteful number, since it uses less digits than its factorization.

15428564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3857145 (or 3857143 counting only the distinct ones).

The product of its digits is 38400, while the sum is 35.

The square root of 15428564 is about 3927.9210786369. The cubic root of 15428564 is about 248.9479200553.

The spelling of 15428564 in words is "fifteen million, four hundred twenty-eight thousand, five hundred sixty-four".