15234378940 has 24 divisors (see below), whose sum is σ = 34900577712. Its totient is φ = 5539774080.

The previous prime is 15234378931. The next prime is 15234378953. The reversal of 15234378940 is 4987343251.

It is a congruent number.

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, 34623369 + ... + 34623808.

It is an arithmetic number, because the mean of its divisors is an integer number (1454190738).

Almost surely, 2^15234378940 is an apocalyptic number.

15234378940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15234378940 is an abundant number, since it is smaller than the sum of its proper divisors (19666198772).

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

15234378940 is a wasteful number, since it uses less digits than its factorization.

15234378940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69247197 (or 69247195 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 15234378940 in words is "fifteen billion, two hundred thirty-four million, three hundred seventy-eight thousand, nine hundred forty".