15472881 has 6 divisors (see below), whose sum is σ = 22349730. Its totient is φ = 10315248.

The previous prime is 15472871. The next prime is 15472889. The reversal of 15472881 is 18827451.

15472881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10342656 + 5130225 = 3216^2 + 2265^2 .

It is not a de Polignac number, because 15472881 - 2⁷ = 15472753 is a prime.

It is a super-2 number, since 2×15472881² = 478820092880322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15472889) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 859596 + ... + 859613.

It is an arithmetic number, because the mean of its divisors is an integer number (3724955).

Almost surely, 2^15472881 is an apocalyptic number.

It is an amenable number.

15472881 is a deficient number, since it is larger than the sum of its proper divisors (6876849).

15472881 is a wasteful number, since it uses less digits than its factorization.

15472881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1719215 (or 1719212 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 15472881 is about 3933.5583127748. The cubic root of 15472881 is about 249.1860514940.

The spelling of 15472881 in words is "fifteen million, four hundred seventy-two thousand, eight hundred eighty-one".