428252180 has 48 divisors (see below), whose sum is σ = 942568704. Its totient is φ = 163130880.

The previous prime is 428252173. The next prime is 428252183. The reversal of 428252180 is 81252824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428252183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108929 + ... + 112791.

It is an arithmetic number, because the mean of its divisors is an integer number (19636848).

Almost surely, 2^428252180 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428252180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (471284352).

428252180 is an abundant number, since it is smaller than the sum of its proper divisors (514316524).

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

428252180 is a wasteful number, since it uses less digits than its factorization.

428252180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4136 (or 4134 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 428252180 is about 20694.2547582656. The cubic root of 428252180 is about 753.7601861247.

The spelling of 428252180 in words is "four hundred twenty-eight million, two hundred fifty-two thousand, one hundred eighty".