402256154 has 16 divisors (see below), whose sum is σ = 630177408. Its totient is φ = 192212592.

The previous prime is 402256111. The next prime is 402256171. The reversal of 402256154 is 451652204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59684 + ... + 66080.

It is an arithmetic number, because the mean of its divisors is an integer number (39386088).

Almost surely, 2^402256154 is an apocalyptic number.

402256154 is a deficient number, since it is larger than the sum of its proper divisors (227921254).

402256154 is a wasteful number, since it uses less digits than its factorization.

402256154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7789.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 402256154 is about 20056.3245386586. The cubic root of 402256154 is about 738.1889937355.

The spelling of 402256154 in words is "four hundred two million, two hundred fifty-six thousand, one hundred fifty-four".