15308940 has 24 divisors (see below), whose sum is σ = 42865200. Its totient is φ = 4082368.

The previous prime is 15308939. The next prime is 15308963. The reversal of 15308940 is 4980351.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 15308898 and 15308907.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127515 + ... + 127634.

It is an arithmetic number, because the mean of its divisors is an integer number (1786050).

Almost surely, 2^15308940 is an apocalyptic number.

15308940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15308940 is an abundant number, since it is smaller than the sum of its proper divisors (27556260).

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

15308940 is a wasteful number, since it uses less digits than its factorization.

15308940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255161 (or 255159 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 15308940 is about 3912.6640540685. The cubic root of 15308940 is about 248.3028514854.

The spelling of 15308940 in words is "fifteen million, three hundred eight thousand, nine hundred forty".