402228157 has 16 divisors (see below), whose sum is σ = 429868800. Its totient is φ = 375278400.

The previous prime is 402228139. The next prime is 402228181. The reversal of 402228157 is 751822204.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402228157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402228137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 458203 + ... + 459079.

It is an arithmetic number, because the mean of its divisors is an integer number (26866800).

Almost surely, 2^402228157 is an apocalyptic number.

It is an amenable number.

402228157 is a deficient number, since it is larger than the sum of its proper divisors (27640643).

402228157 is a wasteful number, since it uses less digits than its factorization.

402228157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 402228157 is about 20055.6265671257. The cubic root of 402228157 is about 738.1718673708.

The spelling of 402228157 in words is "four hundred two million, two hundred twenty-eight thousand, one hundred fifty-seven".