402427998 has 24 divisors (see below), whose sum is σ = 996488688. Its totient is φ = 114979392.

The previous prime is 402427969. The next prime is 402428003. The reversal of 402427998 is 899724204.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 1596811 + ... + 1597062.

It is an arithmetic number, because the mean of its divisors is an integer number (41520362).

Almost surely, 2^402427998 is an apocalyptic number.

402427998 is an abundant number, since it is smaller than the sum of its proper divisors (594060690).

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

402427998 is a wasteful number, since it uses less digits than its factorization.

402427998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3193888 (or 3193885 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 402427998 is about 20060.6081164056. The cubic root of 402427998 is about 738.2940969875.

The spelling of 402427998 in words is "four hundred two million, four hundred twenty-seven thousand, nine hundred ninety-eight".