401012256 has 24 divisors (see below), whose sum is σ = 1052657424. Its totient is φ = 133670720.

The previous prime is 401012237. The next prime is 401012317. The reversal of 401012256 is 652210104.

It is a tau number, because it is divible by the number of its divisors (24).

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, 2088510 + ... + 2088701.

It is an arithmetic number, because the mean of its divisors is an integer number (43860726).

Almost surely, 2^401012256 is an apocalyptic number.

It is an amenable number.

401012256 is an abundant number, since it is smaller than the sum of its proper divisors (651645168).

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

401012256 is a wasteful number, since it uses less digits than its factorization.

401012256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4177224 (or 4177216 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 401012256 is about 20025.2904098792. The cubic root of 401012256 is about 737.4273066721.

The spelling of 401012256 in words is "four hundred one million, twelve thousand, two hundred fifty-six".