15312214240 has 48 divisors (see below), whose sum is σ = 37057441680. Its totient is φ = 5975495680.

The previous prime is 15312214193. The next prime is 15312214243. The reversal of 15312214240 is 4241221351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15312214243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1160530 + ... + 1173649.

It is an arithmetic number, because the mean of its divisors is an integer number (772030035).

Almost surely, 2^15312214240 is an apocalyptic number.

15312214240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15312214240 is an abundant number, since it is smaller than the sum of its proper divisors (21745227440).

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

15312214240 is a wasteful number, since it uses less digits than its factorization.

15312214240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2334235 (or 2334227 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 15312214240 its reverse (4241221351), we get a palindrome (19553435591).

The spelling of 15312214240 in words is "fifteen billion, three hundred twelve million, two hundred fourteen thousand, two hundred forty".