1068404256 has 60 divisors (see below), whose sum is σ = 3142154862. Its totient is φ = 356133888.

The previous prime is 1068404251. The next prime is 1068404279. The reversal of 1068404256 is 6524048601.

It can be written as a sum of positive squares in only one way, i.e., 719312400 + 349091856 = 26820^2 + 18684^2 .

It is a super-2 number, since 2×1068404256² = 2282975308477827072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1068404256.

It is not an unprimeable number, because it can be changed into a prime (1068404251) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 203505 + ... + 208688.

Almost surely, 2^1068404256 is an apocalyptic number.

1068404256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1068404256 is an abundant number, since it is smaller than the sum of its proper divisors (2073750606).

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

1068404256 is an equidigital number, since it uses as much as digits as its factorization.

1068404256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412215 (or 412198 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 1068404256 is about 32686.4537079200. The cubic root of 1068404256 is about 1022.3004134966.

The spelling of 1068404256 in words is "one billion, sixty-eight million, four hundred four thousand, two hundred fifty-six".