422020440 has 48 divisors (see below), whose sum is σ = 1371567600. Its totient is φ = 112538688.

The previous prime is 422020439. The next prime is 422020477. The reversal of 422020440 is 44020224.

422020440 is a `hidden beast` number, since 4 + 220 + 2 + 0 + 440 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 585780 + ... + 586499.

It is an arithmetic number, because the mean of its divisors is an integer number (28574325).

Almost surely, 2^422020440 is an apocalyptic number.

422020440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

422020440 is an abundant number, since it is smaller than the sum of its proper divisors (949547160).

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

422020440 is a wasteful number, since it uses less digits than its factorization.

422020440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172296 (or 1172289 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 422020440 is about 20543.1360799660. The cubic root of 422020440 is about 750.0861767644.

Adding to 422020440 its reverse (44020224), we get a palindrome (466040664).

The spelling of 422020440 in words is "four hundred twenty-two million, twenty thousand, four hundred forty".