402634155 has 128 divisors (see below), whose sum is σ = 841015296. Its totient is φ = 160997760.

The previous prime is 402634151. The next prime is 402634217. The reversal of 402634155 is 551436204.

It is not a de Polignac number, because 402634155 - 2² = 402634151 is a prime.

It is a super-2 number, since 2×402634155² = 324228525545128050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402634151) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6009432 + ... + 6009498.

It is an arithmetic number, because the mean of its divisors is an integer number (6570432).

Almost surely, 2^402634155 is an apocalyptic number.

402634155 is an abundant number, since it is smaller than the sum of its proper divisors (438381141).

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

402634155 is a wasteful number, since it uses less digits than its factorization.

402634155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 402634155 is about 20065.7458122044. The cubic root of 402634155 is about 738.4201472903.

The spelling of 402634155 in words is "four hundred two million, six hundred thirty-four thousand, one hundred fifty-five".