15087940 has 48 divisors (see below), whose sum is σ = 36997632. Its totient is φ = 5060736.

The previous prime is 15087929. The next prime is 15087953. The reversal of 15087940 is 4978051.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 15087896 and 15087905.

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 15 ways as a sum of consecutive naturals, for example, 5434 + ... + 7726.

It is an arithmetic number, because the mean of its divisors is an integer number (770784).

Almost surely, 2^15087940 is an apocalyptic number.

15087940 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 15087940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18498816).

15087940 is an abundant number, since it is smaller than the sum of its proper divisors (21909692).

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

15087940 is a wasteful number, since it uses less digits than its factorization.

15087940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2356 (or 2354 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 15087940 is about 3884.3197602669. The cubic root of 15087940 is about 247.1022212902.

The spelling of 15087940 in words is "fifteen million, eighty-seven thousand, nine hundred forty".