422898840 has 384 divisors, whose sum is σ = 1749772800. Its totient is φ = 88957440.

The previous prime is 422898823. The next prime is 422898857. The reversal of 422898840 is 48898224.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (422898823) and next prime (422898857).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1277475 + ... + 1277805.

It is an arithmetic number, because the mean of its divisors is an integer number (4556700).

Almost surely, 2^422898840 is an apocalyptic number.

422898840 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 422898840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (874886400).

422898840 is an abundant number, since it is smaller than the sum of its proper divisors (1326873960).

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

422898840 is a wasteful number, since it uses less digits than its factorization.

422898840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The square root of 422898840 is about 20564.5043703951. The cubic root of 422898840 is about 750.6062298485.

The spelling of 422898840 in words is "four hundred twenty-two million, eight hundred ninety-eight thousand, eight hundred forty".