13077440 has 28 divisors (see below), whose sum is σ = 31141416. Its totient is φ = 5230848.

The previous prime is 13077413. The next prime is 13077457. The reversal of 13077440 is 4477031.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20114 + ... + 20753.

Almost surely, 2^13077440 is an apocalyptic number.

13077440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13077440 is an abundant number, since it is smaller than the sum of its proper divisors (18063976).

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

13077440 is an equidigital number, since it uses as much as digits as its factorization.

13077440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40884 (or 40874 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 13077440 is about 3616.2743258774. The cubic root of 13077440 is about 235.5994354129.

The spelling of 13077440 in words is "thirteen million, seventy-seven thousand, four hundred forty".