422670640 has 120 divisors (see below), whose sum is σ = 1153720800. Its totient is φ = 141066240.

The previous prime is 422670629. The next prime is 422670653. The reversal of 422670640 is 46076224.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 941136 + ... + 941584.

It is an arithmetic number, because the mean of its divisors is an integer number (9614340).

Almost surely, 2^422670640 is an apocalyptic number.

422670640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422670640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (576860400).

422670640 is an abundant number, since it is smaller than the sum of its proper divisors (731050160).

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

422670640 is a wasteful number, since it uses less digits than its factorization.

422670640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551 (or 504 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 422670640 is about 20558.9552263728. The cubic root of 422670640 is about 750.4711942763.

The spelling of 422670640 in words is "four hundred twenty-two million, six hundred seventy thousand, six hundred forty".