422991504 has 160 divisors (see below), whose sum is σ = 1321443200. Its totient is φ = 128770560.

The previous prime is 422991469. The next prime is 422991523. The reversal of 422991504 is 405199224.

422991504 is a `hidden beast` number, since 42 + 29 + 91 + 504 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 31 ways as a sum of consecutive naturals, for example, 611799 + ... + 612489.

It is an arithmetic number, because the mean of its divisors is an integer number (8259020).

Almost surely, 2^422991504 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 422991504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (660721600).

422991504 is an abundant number, since it is smaller than the sum of its proper divisors (898451696).

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

422991504 is a wasteful number, since it uses less digits than its factorization.

422991504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830 (or 818 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 422991504 is about 20566.7572553380. The cubic root of 422991504 is about 750.6610491808.

The spelling of 422991504 in words is "four hundred twenty-two million, nine hundred ninety-one thousand, five hundred four".