13770940 has 24 divisors (see below), whose sum is σ = 29917440. Its totient is φ = 5318208.

The previous prime is 13770929. The next prime is 13770959. The reversal of 13770940 is 4907731.

13770940 = T₉₆₀ + T₉₆₁ + ... + T₉₈₈.

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, 11292 + ... + 12451.

It is an arithmetic number, because the mean of its divisors is an integer number (1246560).

Almost surely, 2^13770940 is an apocalyptic number.

13770940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13770940 is an abundant number, since it is smaller than the sum of its proper divisors (16146500).

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

13770940 is a wasteful number, since it uses less digits than its factorization.

13770940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23781 (or 23779 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 13770940 is about 3710.9217183875. The cubic root of 13770940 is about 239.6925461168.

The spelling of 13770940 in words is "thirteen million, seven hundred seventy thousand, nine hundred forty".