402821366 has 16 divisors (see below), whose sum is σ = 609674688. Its totient is φ = 199605000.

The previous prime is 402821329. The next prime is 402821371. The reversal of 402821366 is 663128204.

It is a super-2 number, since 2×402821366² = 324530105812211912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104021 + ... + 107823.

It is an arithmetic number, because the mean of its divisors is an integer number (38104668).

Almost surely, 2^402821366 is an apocalyptic number.

402821366 is a deficient number, since it is larger than the sum of its proper divisors (206853322).

402821366 is a wasteful number, since it uses less digits than its factorization.

402821366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4267.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 402821366 is about 20070.4102100580. The cubic root of 402821366 is about 738.5345761933.

The spelling of 402821366 in words is "four hundred two million, eight hundred twenty-one thousand, three hundred sixty-six".