13557020 has 24 divisors (see below), whose sum is σ = 28954800. Its totient is φ = 5330432.

The previous prime is 13557017. The next prime is 13557023. The reversal of 13557020 is 2075531.

It is an interprime number because it is at equal distance from previous prime (13557017) and next prime (13557023).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13557023) 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, 4565 + ... + 6924.

It is an arithmetic number, because the mean of its divisors is an integer number (1206450).

Almost surely, 2^13557020 is an apocalyptic number.

13557020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13557020 is an abundant number, since it is smaller than the sum of its proper divisors (15397780).

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

13557020 is a wasteful number, since it uses less digits than its factorization.

13557020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11557 (or 11555 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 13557020 is about 3681.9858772135. The cubic root of 13557020 is about 238.4449225061. Note that the first 3 decimals are identical.

The spelling of 13557020 in words is "thirteen million, five hundred fifty-seven thousand, twenty".