428260188 has 12 divisors (see below), whose sum is σ = 999273800. Its totient is φ = 142753392.

The previous prime is 428260187. The next prime is 428260223. The reversal of 428260188 is 881062824.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428260187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17844163 + ... + 17844186.

Almost surely, 2^428260188 is an apocalyptic number.

It is an amenable number.

428260188 is an abundant number, since it is smaller than the sum of its proper divisors (571013612).

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

428260188 is a wasteful number, since it uses less digits than its factorization.

428260188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35688356 (or 35688354 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 39.

The square root of 428260188 is about 20694.4482410138. The cubic root of 428260188 is about 753.7648843486.

The spelling of 428260188 in words is "four hundred twenty-eight million, two hundred sixty thousand, one hundred eighty-eight".