15481408 has 28 divisors (see below), whose sum is σ = 31162752. Its totient is φ = 7629440.

The previous prime is 15481399. The next prime is 15481421. The reversal of 15481408 is 80418451.

It is a self number, because there is not a number n which added to its sum of digits gives 15481408.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2841 + ... + 6247.

Almost surely, 2^15481408 is an apocalyptic number.

15481408 is the 2272-nd octagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15481408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15581376).

15481408 is an abundant number, since it is smaller than the sum of its proper divisors (15681344).

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

15481408 is an equidigital number, since it uses as much as digits as its factorization.

15481408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3490 (or 3480 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 15481408 is about 3934.6420421685. The cubic root of 15481408 is about 249.2318180033.

Adding to 15481408 its reverse (80418451), we get a palindrome (95899859).

The spelling of 15481408 in words is "fifteen million, four hundred eighty-one thousand, four hundred eight".