13406740 has 24 divisors (see below), whose sum is σ = 28437192. Its totient is φ = 5308800.

The previous prime is 13406737. The next prime is 13406759. The reversal of 13406740 is 4760431.

It can be written as a sum of positive squares in 4 ways, for example, as 1044484 + 12362256 = 1022^2 + 3516^2 .

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, 1299 + ... + 5338.

It is an arithmetic number, because the mean of its divisors is an integer number (1184883).

Almost surely, 2^13406740 is an apocalyptic number.

13406740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13406740 is an abundant number, since it is smaller than the sum of its proper divisors (15030452).

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

13406740 is a wasteful number, since it uses less digits than its factorization.

13406740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6747 (or 6745 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 13406740 is about 3661.5215416545. The cubic root of 13406740 is about 237.5605902659.

The spelling of 13406740 in words is "thirteen million, four hundred six thousand, seven hundred forty".