15342813 has 6 divisors (see below), whose sum is σ = 22161854. Its totient is φ = 10228536.

The previous prime is 15342797. The next prime is 15342829. The reversal of 15342813 is 31824351.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (15342797) and next prime (15342829).

It can be written as a sum of positive squares in only one way, i.e., 11168964 + 4173849 = 3342^2 + 2043^2 .

It is not a de Polignac number, because 15342813 - 2⁴ = 15342797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15342883) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 852370 + ... + 852387.

Almost surely, 2^15342813 is an apocalyptic number.

It is an amenable number.

15342813 is a deficient number, since it is larger than the sum of its proper divisors (6819041).

15342813 is a wasteful number, since it uses less digits than its factorization.

15342813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704763 (or 1704760 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 15342813 is about 3916.9902986860. The cubic root of 15342813 is about 248.4858505871.

The spelling of 15342813 in words is "fifteen million, three hundred forty-two thousand, eight hundred thirteen".