634222842 has 32 divisors (see below), whose sum is σ = 1465159104. Its totient is φ = 180883200.

The previous prime is 634222829. The next prime is 634222843. The reversal of 634222842 is 248222436.

It is a super-2 number, since 2×634222842² = 804477226629113928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (634222843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281509 + ... + 283752.

It is an arithmetic number, because the mean of its divisors is an integer number (45786222).

Almost surely, 2^634222842 is an apocalyptic number.

634222842 is an abundant number, since it is smaller than the sum of its proper divisors (830936262).

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

634222842 is a wasteful number, since it uses less digits than its factorization.

634222842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565294.

The product of its digits is 36864, while the sum is 33.

The square root of 634222842 is about 25183.7813284661. The cubic root of 634222842 is about 859.1730115730.

The spelling of 634222842 in words is "six hundred thirty-four million, two hundred twenty-two thousand, eight hundred forty-two".