428145852 has 24 divisors (see below), whose sum is σ = 1002034432. Its totient is φ = 142282800.

The previous prime is 428145847. The next prime is 428145857. The reversal of 428145852 is 258541824.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (428145847) and next prime (428145857).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 428145852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428145857) 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, 49924 + ... + 57867.

Almost surely, 2^428145852 is an apocalyptic number.

It is an amenable number.

428145852 is an abundant number, since it is smaller than the sum of its proper divisors (573888580).

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

428145852 is a wasteful number, since it uses less digits than its factorization.

428145852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108129 (or 108127 counting only the distinct ones).

The product of its digits is 102400, while the sum is 39.

The square root of 428145852 is about 20691.6855765788. The cubic root of 428145852 is about 753.6977988595.

The spelling of 428145852 in words is "four hundred twenty-eight million, one hundred forty-five thousand, eight hundred fifty-two".