428681898 has 24 divisors (see below), whose sum is σ = 931097700. Its totient is φ = 142542144.

The previous prime is 428681867. The next prime is 428681899. The reversal of 428681898 is 898186824.

It can be written as a sum of positive squares in 2 ways, for example, as 383885649 + 44796249 = 19593^2 + 6693^2 .

It is not an unprimeable number, because it can be changed into a prime (428681899) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21753 + ... + 36476.

Almost surely, 2^428681898 is an apocalyptic number.

428681898 is an abundant number, since it is smaller than the sum of its proper divisors (502415802).

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

428681898 is a wasteful number, since it uses less digits than its factorization.

428681898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58646 (or 58643 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 54.

The square root of 428681898 is about 20704.6346985403. The cubic root of 428681898 is about 754.0122152308.

The spelling of 428681898 in words is "four hundred twenty-eight million, six hundred eighty-one thousand, eight hundred ninety-eight".