15139400 has 48 divisors (see below), whose sum is σ = 35823600. Its totient is φ = 5948480.

The previous prime is 15139393. The next prime is 15139417. The reversal of 15139400 is 493151.

15139400 = T₁₀₈₈ + T₁₀₈₉ + ... + T₁₁₁₂.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11159 + ... + 12441.

It is an arithmetic number, because the mean of its divisors is an integer number (746325).

Almost surely, 2^15139400 is an apocalyptic number.

15139400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15139400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17911800).

15139400 is an abundant number, since it is smaller than the sum of its proper divisors (20684200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15139400 is a wasteful number, since it uses less digits than its factorization.

15139400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358 (or 1349 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 15139400 is about 3890.9381902055. The cubic root of 15139400 is about 247.3828306395.

The spelling of 15139400 in words is "fifteen million, one hundred thirty-nine thousand, four hundred".