402151230 has 160 divisors (see below), whose sum is σ = 1176503328. Its totient is φ = 97977600.

The previous prime is 402151193. The next prime is 402151231. The reversal of 402151230 is 32151204.

It is a super-2 number, since 2×402151230² = 323451223581025800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402151231) 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 79 ways as a sum of consecutive naturals, for example, 1905825 + ... + 1906035.

Almost surely, 2^402151230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402151230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (588251664).

402151230 is an abundant number, since it is smaller than the sum of its proper divisors (774352098).

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

402151230 is a wasteful number, since it uses less digits than its factorization.

402151230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424 (or 415 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 402151230 is about 20053.7086345643. The cubic root of 402151230 is about 738.1248053848.

The spelling of 402151230 in words is "four hundred two million, one hundred fifty-one thousand, two hundred thirty".