422819040 has 144 divisors (see below), whose sum is σ = 1549415952. Its totient is φ = 96638976.

The previous prime is 422819039. The next prime is 422819063. The reversal of 422819040 is 40918224.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 422818989 and 422819007.

It is a congruent number.

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, 14532 + ... + 32508.

It is an arithmetic number, because the mean of its divisors is an integer number (10759833).

Almost surely, 2^422819040 is an apocalyptic number.

422819040 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 422819040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (774707976).

422819040 is an abundant number, since it is smaller than the sum of its proper divisors (1126596912).

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

422819040 is a wasteful number, since it uses less digits than its factorization.

422819040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18009 (or 17994 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 422819040 is about 20562.5640424535. The cubic root of 422819040 is about 750.5590143449.

The spelling of 422819040 in words is "four hundred twenty-two million, eight hundred nineteen thousand, forty".