1256332830 has 32 divisors (see below), whose sum is σ = 3016341504. Its totient is φ = 334895136.

The previous prime is 1256332823. The next prime is 1256332871. The reversal of 1256332830 is 382336521.

It is a junction number, because it is equal to n+sod(n) for n = 1256332791 and 1256332800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94027 + ... + 106553.

It is an arithmetic number, because the mean of its divisors is an integer number (94260672).

Almost surely, 2^1256332830 is an apocalyptic number.

1256332830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1256332830 is an abundant number, since it is smaller than the sum of its proper divisors (1760008674).

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

1256332830 is a wasteful number, since it uses less digits than its factorization.

1256332830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15880.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 1256332830 is about 35444.7856531818. The cubic root of 1256332830 is about 1079.0334373441.

The spelling of 1256332830 in words is "one billion, two hundred fifty-six million, three hundred thirty-two thousand, eight hundred thirty".