13457520 has 60 divisors (see below), whose sum is σ = 45197256. Its totient is φ = 3588480.

The previous prime is 13457519. The next prime is 13457527. The reversal of 13457520 is 2575431.

It is a happy number.

13457520 is a `hidden beast` number, since 134 + 5 + 7 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×13457520² = 362209689100800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13457527) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 8626 + ... + 10065.

Almost surely, 2^13457520 is an apocalyptic number.

13457520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13457520 is an abundant number, since it is smaller than the sum of its proper divisors (31739736).

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

13457520 is a wasteful number, since it uses less digits than its factorization.

13457520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18710 (or 18701 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 13457520 is about 3668.4492636535. The cubic root of 13457520 is about 237.8601442763.

The spelling of 13457520 in words is "thirteen million, four hundred fifty-seven thousand, five hundred twenty".