422657634 has 40 divisors (see below), whose sum is σ = 986176080. Its totient is φ = 120755208.

The previous prime is 422657617. The next prime is 422657639. The reversal of 422657634 is 436756224.

It is a junction number, because it is equal to n+sod(n) for n = 422657592 and 422657601.

It is not an unprimeable number, because it can be changed into a prime (422657639) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 264 + ... + 29075.

It is an arithmetic number, because the mean of its divisors is an integer number (24654402).

Almost surely, 2^422657634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422657634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (493088040).

422657634 is an abundant number, since it is smaller than the sum of its proper divisors (563518446).

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

422657634 is an equidigital number, since it uses as much as digits as its factorization.

422657634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29372 (or 29351 counting only the distinct ones).

The product of its digits is 241920, while the sum is 39.

The square root of 422657634 is about 20558.6389140916. The cubic root of 422657634 is about 750.4634966133.

The spelling of 422657634 in words is "four hundred twenty-two million, six hundred fifty-seven thousand, six hundred thirty-four".