15228140 has 12 divisors (see below), whose sum is σ = 31979136. Its totient is φ = 6091248.

The previous prime is 15228131. The next prime is 15228163. The reversal of 15228140 is 4182251.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380684 + ... + 380723.

It is an arithmetic number, because the mean of its divisors is an integer number (2664928).

Almost surely, 2^15228140 is an apocalyptic number.

15228140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15228140 is an abundant number, since it is smaller than the sum of its proper divisors (16750996).

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

15228140 is a wasteful number, since it uses less digits than its factorization.

15228140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761416 (or 761414 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 15228140 is about 3902.3249480278. The cubic root of 15228140 is about 247.8652363558.

The spelling of 15228140 in words is "fifteen million, two hundred twenty-eight thousand, one hundred forty".