422285400 has 144 divisors (see below), whose sum is σ = 1470869400. Its totient is φ = 112596480.

The previous prime is 422285387. The next prime is 422285401. The reversal of 422285400 is 4582224.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422285401) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 44256 + ... + 52944.

Almost surely, 2^422285400 is an apocalyptic number.

422285400 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 422285400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (735434700).

422285400 is an abundant number, since it is smaller than the sum of its proper divisors (1048584000).

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

422285400 is a wasteful number, since it uses less digits than its factorization.

422285400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8720 (or 8699 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 422285400 is about 20549.5839373940. The cubic root of 422285400 is about 750.2431211809.

The spelling of 422285400 in words is "four hundred twenty-two million, two hundred eighty-five thousand, four hundred".