1256850630 has 96 divisors (see below), whose sum is σ = 3954360384. Its totient is φ = 270379008.

The previous prime is 1256850629. The next prime is 1256850653. The reversal of 1256850630 is 360586521.

1256850630 is a `hidden beast` number, since 12 + 5 + 6 + 8 + 5 + 0 + 630 = 666.

It is a super-2 number, since 2×1256850630² = 3159347012262793800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47967 + ... + 69386.

It is an arithmetic number, because the mean of its divisors is an integer number (41191254).

Almost surely, 2^1256850630 is an apocalyptic number.

1256850630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1256850630 is an abundant number, since it is smaller than the sum of its proper divisors (2697509754).

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

1256850630 is a wasteful number, since it uses less digits than its factorization.

1256850630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117390 (or 117387 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 1256850630 is about 35452.0892191137. The cubic root of 1256850630 is about 1079.1816588871.

The spelling of 1256850630 in words is "one billion, two hundred fifty-six million, eight hundred fifty thousand, six hundred thirty".