213938822 has 16 divisors (see below), whose sum is σ = 338333760. Its totient is φ = 101178792.

The previous prime is 213938759. The next prime is 213938849. The reversal of 213938822 is 228839312.

It is a Harshad number since it is a multiple of its sum of digits (38).

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, 21833 + ... + 30075.

It is an arithmetic number, because the mean of its divisors is an integer number (21145860).

Almost surely, 2^213938822 is an apocalyptic number.

213938822 is a deficient number, since it is larger than the sum of its proper divisors (124394938).

213938822 is a wasteful number, since it uses less digits than its factorization.

213938822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8947.

The product of its digits is 41472, while the sum is 38.

The square root of 213938822 is about 14626.6476678698. The cubic root of 213938822 is about 598.0853988544.

The spelling of 213938822 in words is "two hundred thirteen million, nine hundred thirty-eight thousand, eight hundred twenty-two".