402988158 has 48 divisors (see below), whose sum is σ = 904056192. Its totient is φ = 129600000.

The previous prime is 402988153. The next prime is 402988163. The reversal of 402988158 is 851889204.

It is a happy number.

402988158 is a `hidden beast` number, since 402 + 98 + 8 + 158 = 666.

It is an interprime number because it is at equal distance from previous prime (402988153) and next prime (402988163).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402988153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 222858 + ... + 224658.

It is an arithmetic number, because the mean of its divisors is an integer number (18834504).

Almost surely, 2^402988158 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402988158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (452028096).

402988158 is an abundant number, since it is smaller than the sum of its proper divisors (501068034).

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

402988158 is a wasteful number, since it uses less digits than its factorization.

402988158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2241 (or 2238 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The square root of 402988158 is about 20074.5649516995. The cubic root of 402988158 is about 738.6364945388.

The spelling of 402988158 in words is "four hundred two million, nine hundred eighty-eight thousand, one hundred fifty-eight".