15427640272 has 40 divisors (see below), whose sum is σ = 33001325280. Its totient is φ = 6928068480.

The previous prime is 15427640243. The next prime is 15427640279. The reversal of 15427640272 is 27204672451.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15427640279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513447 + ... + 542662.

It is an arithmetic number, because the mean of its divisors is an integer number (825033132).

Almost surely, 2^15427640272 is an apocalyptic number.

It is an amenable number.

15427640272 is an abundant number, since it is smaller than the sum of its proper divisors (17573685008).

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

15427640272 is a wasteful number, since it uses less digits than its factorization.

15427640272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056211 (or 1056205 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 40.

The spelling of 15427640272 in words is "fifteen billion, four hundred twenty-seven million, six hundred forty thousand, two hundred seventy-two".