15338972240 has 40 divisors (see below), whose sum is σ = 35668574208. Its totient is φ = 6134648960.

The previous prime is 15338972239. The next prime is 15338972293. The reversal of 15338972240 is 4227983351.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 15338972191 and 15338972200.

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, 773489 + ... + 793071.

Almost surely, 2^15338972240 is an apocalyptic number.

15338972240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15338972240 is an abundant number, since it is smaller than the sum of its proper divisors (20329601968).

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

15338972240 is a wasteful number, since it uses less digits than its factorization.

15338972240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29387 (or 29381 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 15338972240 in words is "fifteen billion, three hundred thirty-eight million, nine hundred seventy-two thousand, two hundred forty".