422678890 has 16 divisors (see below), whose sum is σ = 767934432. Its totient is φ = 167491024.

The previous prime is 422678887. The next prime is 422678897. The reversal of 422678890 is 98876224.

It is a self number, because there is not a number n which added to its sum of digits gives 422678890.

It is not an unprimeable number, because it can be changed into a prime (422678897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196444 + ... + 198583.

It is an arithmetic number, because the mean of its divisors is an integer number (47995902).

Almost surely, 2^422678890 is an apocalyptic number.

422678890 is a deficient number, since it is larger than the sum of its proper divisors (345255542).

422678890 is a wasteful number, since it uses less digits than its factorization.

422678890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395141.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 422678890 is about 20559.1558678852. The cubic root of 422678890 is about 750.4760769962.

The spelling of 422678890 in words is "four hundred twenty-two million, six hundred seventy-eight thousand, eight hundred ninety".