402323328 has 256 divisors, whose sum is σ = 1365984000. Its totient is φ = 115292160.

The previous prime is 402323321. The next prime is 402323329. The reversal of 402323328 is 823323204.

402323328 is a `hidden beast` number, since 402 + 3 + 233 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402323321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 722026 + ... + 722582.

It is an arithmetic number, because the mean of its divisors is an integer number (5335875).

Almost surely, 2^402323328 is an apocalyptic number.

402323328 is a gapful number since it is divisible by the number (48) 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 402323328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (682992000).

402323328 is an abundant number, since it is smaller than the sum of its proper divisors (963660672).

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

402323328 is a wasteful number, since it uses less digits than its factorization.

402323328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610 (or 592 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 402323328 is about 20057.9991026024. Note that the first 3 decimals coincide. The cubic root of 402323328 is about 738.2300822699.

The spelling of 402323328 in words is "four hundred two million, three hundred twenty-three thousand, three hundred twenty-eight".