15288140 has 24 divisors (see below), whose sum is σ = 36691872. Its totient is φ = 5241600.

The previous prime is 15288137. The next prime is 15288173. The reversal of 15288140 is 4188251.

15288140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54461 + ... + 54740.

It is an arithmetic number, because the mean of its divisors is an integer number (1528828).

Almost surely, 2^15288140 is an apocalyptic number.

15288140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15288140 is an abundant number, since it is smaller than the sum of its proper divisors (21403732).

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

15288140 is a wasteful number, since it uses less digits than its factorization.

15288140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109217 (or 109215 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 15288140 is about 3910.0051150862. The cubic root of 15288140 is about 248.1903455435.

The spelling of 15288140 in words is "fifteen million, two hundred eighty-eight thousand, one hundred forty".