402644002 has 16 divisors (see below), whose sum is σ = 620608032. Its totient is φ = 195814080.

The previous prime is 402643999. The next prime is 402644009. The reversal of 402644002 is 200446204.

It is not an unprimeable number, because it can be changed into a prime (402644009) 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 7 ways as a sum of consecutive naturals, for example, 11013 + ... + 30439.

It is an arithmetic number, because the mean of its divisors is an integer number (38788002).

Almost surely, 2^402644002 is an apocalyptic number.

402644002 is a deficient number, since it is larger than the sum of its proper divisors (217964030).

402644002 is a wasteful number, since it uses less digits than its factorization.

402644002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19713.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 402644002 is about 20065.9911791070. The cubic root of 402644002 is about 738.4261669517.

The spelling of 402644002 in words is "four hundred two million, six hundred forty-four thousand, two".