12857355 has 72 divisors (see below), whose sum is σ = 27529632. Its totient is φ = 5531904.

The previous prime is 12857347. The next prime is 12857381. The reversal of 12857355 is 55375821.

It is not a de Polignac number, because 12857355 - 2³ = 12857347 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 756307 + ... + 756323.

It is an arithmetic number, because the mean of its divisors is an integer number (382356).

Almost surely, 2^12857355 is an apocalyptic number.

12857355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12857355 is an abundant number, since it is smaller than the sum of its proper divisors (14672277).

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

12857355 is an frugal number, since it uses more digits than its factorization.

12857355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63 (or 32 counting only the distinct ones).

The product of its digits is 42000, while the sum is 36.

The square root of 12857355 is about 3585.7154097892. The cubic root of 12857355 is about 234.2702881581.

The spelling of 12857355 in words is "twelve million, eight hundred fifty-seven thousand, three hundred fifty-five".