402868155 has 16 divisors (see below), whose sum is σ = 644891904. Its totient is φ = 214762080.

The previous prime is 402868121. The next prime is 402868181. The reversal of 402868155 is 551868204.

It is not a de Polignac number, because 402868155 - 2⁹ = 402867643 is a prime.

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, 35712 + ... + 45618.

It is an arithmetic number, because the mean of its divisors is an integer number (40305744).

Almost surely, 2^402868155 is an apocalyptic number.

402868155 is a deficient number, since it is larger than the sum of its proper divisors (242023749).

402868155 is a wasteful number, since it uses less digits than its factorization.

402868155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12626.

The product of its (nonzero) digits is 76800, while the sum is 39.

The square root of 402868155 is about 20071.5757976298. The cubic root of 402868155 is about 738.5631694767.

The spelling of 402868155 in words is "four hundred two million, eight hundred sixty-eight thousand, one hundred fifty-five".