428108920 has 32 divisors (see below), whose sum is σ = 965707200. Its totient is φ = 170805888.

The previous prime is 428108911. The next prime is 428108929. The reversal of 428108920 is 29801824.

It is an interprime number because it is at equal distance from previous prime (428108911) and next prime (428108929).

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2401 + ... + 29359.

It is an arithmetic number, because the mean of its divisors is an integer number (30178350).

Almost surely, 2^428108920 is an apocalyptic number.

428108920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

428108920 is an abundant number, since it is smaller than the sum of its proper divisors (537598280).

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

428108920 is a wasteful number, since it uses less digits than its factorization.

428108920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27367 (or 27363 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 428108920 is about 20690.7931215795. The cubic root of 428108920 is about 753.6761268309.

The spelling of 428108920 in words is "four hundred twenty-eight million, one hundred eight thousand, nine hundred twenty".