12857480 has 32 divisors (see below), whose sum is σ = 29168640. Its totient is φ = 5100480.

The previous prime is 12857443. The next prime is 12857489. The reversal of 12857480 is 8475821.

It is a self number, because there is not a number n which added to its sum of digits gives 12857480.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12857489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3815 + ... + 6345.

It is an arithmetic number, because the mean of its divisors is an integer number (911520).

Almost surely, 2^12857480 is an apocalyptic number.

12857480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12857480 is an abundant number, since it is smaller than the sum of its proper divisors (16311160).

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

12857480 is a wasteful number, since it uses less digits than its factorization.

12857480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2669 (or 2665 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 12857480 is about 3585.7328400203. The cubic root of 12857480 is about 234.2710473524.

The spelling of 12857480 in words is "twelve million, eight hundred fifty-seven thousand, four hundred eighty".