13405880 has 32 divisors (see below), whose sum is σ = 30270240. Its totient is φ = 5343360.

The previous prime is 13405879. The next prime is 13405897. The reversal of 13405880 is 8850431.

13405880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18077 + ... + 18803.

It is an arithmetic number, because the mean of its divisors is an integer number (945945).

Almost surely, 2^13405880 is an apocalyptic number.

13405880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13405880 is an abundant number, since it is smaller than the sum of its proper divisors (16864360).

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

13405880 is a wasteful number, since it uses less digits than its factorization.

13405880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199 (or 1195 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 13405880 is about 3661.4041022537. The cubic root of 13405880 is about 237.5555105703. Note that the first 4 decimals are identical.

The spelling of 13405880 in words is "thirteen million, four hundred five thousand, eight hundred eighty".