13649480 has 32 divisors (see below), whose sum is σ = 33075000. Its totient is φ = 5039616.

The previous prime is 13649431. The next prime is 13649483. The reversal of 13649480 is 8494631.

It can be written as a sum of positive squares in 4 ways, for example, as 10329796 + 3319684 = 3214^2 + 1822^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13649480.

It is not an unprimeable number, because it can be changed into a prime (13649483) 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, 12605 + ... + 13644.

Almost surely, 2^13649480 is an apocalyptic number.

13649480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13649480 is an abundant number, since it is smaller than the sum of its proper divisors (19425520).

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

13649480 is a wasteful number, since it uses less digits than its factorization.

13649480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26273 (or 26269 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 13649480 is about 3694.5202665569. The cubic root of 13649480 is about 238.9857662082.

The spelling of 13649480 in words is "thirteen million, six hundred forty-nine thousand, four hundred eighty".