402394000 has 80 divisors (see below), whose sum is σ = 995829120. Its totient is φ = 157180800.

The previous prime is 402393997. The next prime is 402394001. The reversal of 402394000 is 493204.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (402394001) 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, 83661 + ... + 88339.

It is an arithmetic number, because the mean of its divisors is an integer number (12447864).

Almost surely, 2^402394000 is an apocalyptic number.

402394000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402394000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (497914560).

402394000 is an abundant number, since it is smaller than the sum of its proper divisors (593435120).

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

402394000 is a wasteful number, since it uses less digits than its factorization.

402394000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4745 (or 4729 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 402394000 is about 20059.7607164193. The cubic root of 402394000 is about 738.2733055004.

The spelling of 402394000 in words is "four hundred two million, three hundred ninety-four thousand".