402930 has 72 divisors (see below), whose sum is σ = 1182636.
Its totient is φ = 95040.
The previous prime is 402923. The next prime is 402943. The reversal of 402930 is 39204.
It can be written as a sum of positive squares in 2 ways, for example, as 393129 + 9801 = 627^2 + 99^2
It is a Harshad number since it is a multiple of its sum of digits (18).
It is an unprimeable number.
It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 10872 + ... + 10908.
2402930 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 402930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (591318).
402930 is an abundant number, since it is smaller than the sum of its proper divisors (779706).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
402930 is a wasteful number, since it uses less digits than its factorization.
402930 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 72 (or 58 counting only the distinct ones).
The product of its (nonzero) digits is 216, while the sum is 18.
The square root of 402930 is about 634.7676740352.
The cubic root of 402930 is about 73.8600960254.
The spelling of 402930 in words is "four hundred two thousand, nine hundred thirty".