15142690 has 16 divisors (see below), whose sum is σ = 27417528. Its totient is φ = 6021376.

The previous prime is 15142679. The next prime is 15142691. The reversal of 15142690 is 9624151.

15142690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 15139881 + 2809 = 3891^2 + 53^2 .

It is a super-2 number, since 2×15142690² = 458602120872200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15142691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2647 + ... + 6106.

Almost surely, 2^15142690 is an apocalyptic number.

15142690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15142690 is a deficient number, since it is larger than the sum of its proper divisors (12274838).

15142690 is a wasteful number, since it uses less digits than its factorization.

15142690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8933.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 15142690 is about 3891.3609444512. The cubic root of 15142690 is about 247.4007492396.

The spelling of 15142690 in words is "fifteen million, one hundred forty-two thousand, six hundred ninety".