15204605940 has 36 divisors (see below), whose sum is σ = 46120638564. Its totient is φ = 4054561536.

The previous prime is 15204605917. The next prime is 15204605959. The reversal of 15204605940 is 4950640251.

15204605940 is a `hidden beast` number, since 1 + 5 + 2 + 0 + 4 + 60 + 594 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9562492944 + 5642112996 = 97788^2 + 75114^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 15204605895 and 15204605904.

It is a congruent 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, 42234837 + ... + 42235196.

It is an arithmetic number, because the mean of its divisors is an integer number (1281128849).

Almost surely, 2^15204605940 is an apocalyptic number.

15204605940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15204605940 is an abundant number, since it is smaller than the sum of its proper divisors (30916032624).

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

15204605940 is a wasteful number, since it uses less digits than its factorization.

15204605940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84470048 (or 84470043 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 15204605940 in words is "fifteen billion, two hundred four million, six hundred five thousand, nine hundred forty".