13406040 has 64 divisors (see below), whose sum is σ = 44690400. Its totient is φ = 3574656.

The previous prime is 13406027. The next prime is 13406053. The reversal of 13406040 is 4060431.

13406040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13406027) and next prime (13406053).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5127 + ... + 7286.

Almost surely, 2^13406040 is an apocalyptic number.

13406040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13406040 is an abundant number, since it is smaller than the sum of its proper divisors (31284360).

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

13406040 is a wasteful number, since it uses less digits than its factorization.

13406040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12433 (or 12423 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 13406040 is about 3661.4259517297. The cubic root of 13406040 is about 237.5564556464.

Adding to 13406040 its reverse (4060431), we get a palindrome (17466471).

The spelling of 13406040 in words is "thirteen million, four hundred six thousand, forty".