402256017 has 8 divisors (see below), whose sum is σ = 595934880. Its totient is φ = 268170660.

The previous prime is 402256009. The next prime is 402256027. The reversal of 402256017 is 710652204.

402256017 is a `hidden beast` number, since 402 + 256 + 0 + 1 + 7 = 666.

It is not a de Polignac number, because 402256017 - 2³ = 402256009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 14898371 = 402256017 / (4 + 0 + 2 + 2 + 5 + 6 + 0 + 1 + 7).

It is not an unprimeable number, because it can be changed into a prime (402256027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7449159 + ... + 7449212.

It is an arithmetic number, because the mean of its divisors is an integer number (74491860).

Almost surely, 2^402256017 is an apocalyptic number.

It is an amenable number.

402256017 is a deficient number, since it is larger than the sum of its proper divisors (193678863).

402256017 is a wasteful number, since it uses less digits than its factorization.

402256017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14898380 (or 14898374 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 402256017 is about 20056.3211232768. The cubic root of 402256017 is about 738.1889099316.

The spelling of 402256017 in words is "four hundred two million, two hundred fifty-six thousand, seventeen".