1257382884 has 12 divisors (see below), whose sum is σ = 2933893424. Its totient is φ = 419127624.

The previous prime is 1257382873. The next prime is 1257382901. The reversal of 1257382884 is 4882837521.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52390942 + ... + 52390965.

Almost surely, 2^1257382884 is an apocalyptic number.

It is an amenable number.

1257382884 is an abundant number, since it is smaller than the sum of its proper divisors (1676510540).

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

1257382884 is a wasteful number, since it uses less digits than its factorization.

1257382884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104781914 (or 104781912 counting only the distinct ones).

The product of its digits is 860160, while the sum is 48.

The square root of 1257382884 is about 35459.5950907508. The cubic root of 1257382884 is about 1079.3339754996. Note that the first 3 decimals are identical.

The spelling of 1257382884 in words is "one billion, two hundred fifty-seven million, three hundred eighty-two thousand, eight hundred eighty-four".