15420222940 has 24 divisors (see below), whose sum is σ = 32913330912. Its totient is φ = 6066972480.

The previous prime is 15420222919. The next prime is 15420222947. The reversal of 15420222940 is 4922202451.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15420222947) 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, 6318544 + ... + 6320983.

It is an arithmetic number, because the mean of its divisors is an integer number (1371388788).

Almost surely, 2^15420222940 is an apocalyptic number.

15420222940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15420222940 is an abundant number, since it is smaller than the sum of its proper divisors (17493107972).

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

15420222940 is a wasteful number, since it uses less digits than its factorization.

15420222940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12639597 (or 12639595 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 15420222940 in words is "fifteen billion, four hundred twenty million, two hundred twenty-two thousand, nine hundred forty".