422618240 has 128 divisors (see below), whose sum is σ = 1111734720. Its totient is φ = 152350720.

The previous prime is 422618177. The next prime is 422618263. The reversal of 422618240 is 42816224.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1217747 + ... + 1218093.

Almost surely, 2^422618240 is an apocalyptic number.

422618240 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 422618240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (555867360).

422618240 is an abundant number, since it is smaller than the sum of its proper divisors (689116480).

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

422618240 is a wasteful number, since it uses less digits than its factorization.

422618240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550 (or 538 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 422618240 is about 20557.6808030478. The cubic root of 422618240 is about 750.4401801233.

The spelling of 422618240 in words is "four hundred twenty-two million, six hundred eighteen thousand, two hundred forty".