15404479272 has 576 divisors, whose sum is σ = 54719945280. Its totient is φ = 3877300224.

The previous prime is 15404479217. The next prime is 15404479301. The reversal of 15404479272 is 27297440451.

15404479272 is a `hidden beast` number, since 1 + 54 + 0 + 447 + 92 + 72 = 666.

15404479272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 143967043 + ... + 143967149.

It is an arithmetic number, because the mean of its divisors is an integer number (94999905).

Almost surely, 2^15404479272 is an apocalyptic number.

15404479272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15404479272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27359972640).

15404479272 is an abundant number, since it is smaller than the sum of its proper divisors (39315466008).

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

15404479272 is a wasteful number, since it uses less digits than its factorization.

15404479272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 15404479272 in words is "fifteen billion, four hundred four million, four hundred seventy-nine thousand, two hundred seventy-two".