428422280 has 128 divisors (see below), whose sum is σ = 1143676800. Its totient is φ = 143573760.

The previous prime is 428422277. The next prime is 428422289. The reversal of 428422280 is 82224824.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (428422289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 691811 + ... + 692429.

It is an arithmetic number, because the mean of its divisors is an integer number (8934975).

Almost surely, 2^428422280 is an apocalyptic number.

428422280 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 428422280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (571838400).

428422280 is an abundant number, since it is smaller than the sum of its proper divisors (715254520).

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

428422280 is a wasteful number, since it uses less digits than its factorization.

428422280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676 (or 650 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 32.

The square root of 428422280 is about 20698.3641865728. The cubic root of 428422280 is about 753.8599697272.

The spelling of 428422280 in words is "four hundred twenty-eight million, four hundred twenty-two thousand, two hundred eighty".