13765420 has 24 divisors (see below), whose sum is σ = 29028384. Its totient is φ = 5483136.

The previous prime is 13765399. The next prime is 13765421. The reversal of 13765420 is 2456731.

It is not an unprimeable number, because it can be changed into a prime (13765421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3952 + ... + 6568.

It is an arithmetic number, because the mean of its divisors is an integer number (1209516).

Almost surely, 2^13765420 is an apocalyptic number.

13765420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13765420 is an abundant number, since it is smaller than the sum of its proper divisors (15262964).

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

13765420 is a wasteful number, since it uses less digits than its factorization.

13765420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2889 (or 2887 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 13765420 is about 3710.1778933092. The cubic root of 13765420 is about 239.6605153893.

The spelling of 13765420 in words is "thirteen million, seven hundred sixty-five thousand, four hundred twenty".