442564190 has 16 divisors (see below), whose sum is σ = 800789760. Its totient is φ = 176098080.

The previous prime is 442564103. The next prime is 442564201. The reversal of 442564190 is 91465244.

It is a super-2 number, since 2×442564190² = 391726124540712200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 442564190.

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 7 ways as a sum of consecutive naturals, for example, 113945 + ... + 117764.

It is an arithmetic number, because the mean of its divisors is an integer number (50049360).

Almost surely, 2^442564190 is an apocalyptic number.

442564190 is a deficient number, since it is larger than the sum of its proper divisors (358225570).

442564190 is a wasteful number, since it uses less digits than its factorization.

442564190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231907.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 442564190 is about 21037.2096533737. The cubic root of 442564190 is about 762.0651301559.

The spelling of 442564190 in words is "four hundred forty-two million, five hundred sixty-four thousand, one hundred ninety".