422619940 has 48 divisors (see below), whose sum is σ = 928287360. Its totient is φ = 161314560.

The previous prime is 422619937. The next prime is 422619941. The reversal of 422619940 is 49916224.

It is a happy number.

It is a super-2 number, since 2×422619940² = 357215227371207200, 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 422619940.

It is not an unprimeable number, because it can be changed into a prime (422619941) 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, 261856 + ... + 263464.

It is an arithmetic number, because the mean of its divisors is an integer number (19339320).

Almost surely, 2^422619940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422619940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (464143680).

422619940 is an abundant number, since it is smaller than the sum of its proper divisors (505667420).

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

422619940 is a wasteful number, since it uses less digits than its factorization.

422619940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2212 (or 2210 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 422619940 is about 20557.7221500827. The cubic root of 422619940 is about 750.4411863478.

The spelling of 422619940 in words is "four hundred twenty-two million, six hundred nineteen thousand, nine hundred forty".