13255640 has 16 divisors (see below), whose sum is σ = 29825280. Its totient is φ = 5302240.

The previous prime is 13255633. The next prime is 13255651. The reversal of 13255640 is 4655231.

It is a super-3 number, since 3×13255640³ (a number of 22 digits) contains 333 as substring.

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, 165656 + ... + 165735.

It is an arithmetic number, because the mean of its divisors is an integer number (1864080).

Almost surely, 2^13255640 is an apocalyptic number.

13255640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13255640 is an abundant number, since it is smaller than the sum of its proper divisors (16569640).

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

13255640 is a wasteful number, since it uses less digits than its factorization.

13255640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331402 (or 331398 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 13255640 is about 3640.8295757973. The cubic root of 13255640 is about 236.6647446338.

The spelling of 13255640 in words is "thirteen million, two hundred fifty-five thousand, six hundred forty".