15428013 has 16 divisors (see below), whose sum is σ = 21569856. Its totient is φ = 9797760.

The previous prime is 15428011. The next prime is 15428047. The reversal of 15428013 is 31082451.

It is not a de Polignac number, because 15428013 - 2¹ = 15428011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15428011) 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, 3831 + ... + 6747.

It is an arithmetic number, because the mean of its divisors is an integer number (1348116).

Almost surely, 2^15428013 is an apocalyptic number.

It is an amenable number.

15428013 is a deficient number, since it is larger than the sum of its proper divisors (6141843).

15428013 is a wasteful number, since it uses less digits than its factorization.

15428013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3004.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 15428013 is about 3927.8509391269. The cubic root of 15428013 is about 248.9449564626.

It can be divided in two parts, 1542801 and 3, that multiplied together give a triangular number (4628403 = T₃₀₄₂).

The spelling of 15428013 in words is "fifteen million, four hundred twenty-eight thousand, thirteen".