13769540 has 12 divisors (see below), whose sum is σ = 28916076. Its totient is φ = 5507808.

The previous prime is 13769533. The next prime is 13769551. The reversal of 13769540 is 4596731.

It can be written as a sum of positive squares in 2 ways, for example, as 6240004 + 7529536 = 2498^2 + 2744^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13769540.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344219 + ... + 344258.

It is an arithmetic number, because the mean of its divisors is an integer number (2409673).

Almost surely, 2^13769540 is an apocalyptic number.

13769540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13769540 is an abundant number, since it is smaller than the sum of its proper divisors (15146536).

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

13769540 is a wasteful number, since it uses less digits than its factorization.

13769540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688486 (or 688484 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 13769540 is about 3710.7330812119. The cubic root of 13769540 is about 239.6844231918.

The spelling of 13769540 in words is "thirteen million, seven hundred sixty-nine thousand, five hundred forty".