428108922 has 16 divisors (see below), whose sum is σ = 951353280. Its totient is φ = 142702956.

The previous prime is 428108911. The next prime is 428108929. The reversal of 428108922 is 229801824.

It is not an unprimeable number, because it can be changed into a prime (428108929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3963918 + ... + 3964025.

It is an arithmetic number, because the mean of its divisors is an integer number (59459580).

Almost surely, 2^428108922 is an apocalyptic number.

428108922 is an abundant number, since it is smaller than the sum of its proper divisors (523244358).

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

428108922 is a wasteful number, since it uses less digits than its factorization.

428108922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7927954 (or 7927948 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 428108922 is about 20690.7931699101. The cubic root of 428108922 is about 753.6761280045.

The spelling of 428108922 in words is "four hundred twenty-eight million, one hundred eight thousand, nine hundred twenty-two".