402308157 has 16 divisors (see below), whose sum is σ = 562843008. Its totient is φ = 255119040.

The previous prime is 402308143. The next prime is 402308191. The reversal of 402308157 is 751803204.

It is not a de Polignac number, because 402308157 - 2⁷ = 402308029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402308657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3618 + ... + 28595.

It is an arithmetic number, because the mean of its divisors is an integer number (35177688).

Almost surely, 2^402308157 is an apocalyptic number.

It is an amenable number.

402308157 is a deficient number, since it is larger than the sum of its proper divisors (160534851).

402308157 is a wasteful number, since it uses less digits than its factorization.

402308157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32420.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 402308157 is about 20057.6209207373. The cubic root of 402308157 is about 738.2208029759.

The spelling of 402308157 in words is "four hundred two million, three hundred eight thousand, one hundred fifty-seven".