422506840 has 32 divisors (see below), whose sum is σ = 1086446880. Its totient is φ = 144859392.

The previous prime is 422506837. The next prime is 422506867. The reversal of 422506840 is 48605224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 754197 + ... + 754756.

It is an arithmetic number, because the mean of its divisors is an integer number (33951465).

Almost surely, 2^422506840 is an apocalyptic number.

422506840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

422506840 is an abundant number, since it is smaller than the sum of its proper divisors (663940040).

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

422506840 is a wasteful number, since it uses less digits than its factorization.

422506840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508971 (or 1508967 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 422506840 is about 20554.9711748764. The cubic root of 422506840 is about 750.3742369349.

The spelling of 422506840 in words is "four hundred twenty-two million, five hundred six thousand, eight hundred forty".