402458340 has 96 divisors (see below), whose sum is σ = 1199076480. Its totient is φ = 100509696.

The previous prime is 402458333. The next prime is 402458359. The reversal of 402458340 is 43854204.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 402458298 and 402458307.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 232719 + ... + 234441.

It is an arithmetic number, because the mean of its divisors is an integer number (12490380).

Almost surely, 2^402458340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402458340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (599538240).

402458340 is an abundant number, since it is smaller than the sum of its proper divisors (796618140).

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

402458340 is a wasteful number, since it uses less digits than its factorization.

402458340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1981 (or 1979 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 402458340 is about 20061.3643603819. The cubic root of 402458340 is about 738.3126516578.

The spelling of 402458340 in words is "four hundred two million, four hundred fifty-eight thousand, three hundred forty".