428194940 has 48 divisors (see below), whose sum is σ = 930908160. Its totient is φ = 165272640.

The previous prime is 428194913. The next prime is 428194951. The reversal of 428194940 is 49491824.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273881 + ... + 275439.

It is an arithmetic number, because the mean of its divisors is an integer number (19393920).

Almost surely, 2^428194940 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 428194940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (465454080).

428194940 is an abundant number, since it is smaller than the sum of its proper divisors (502713220).

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

428194940 is a wasteful number, since it uses less digits than its factorization.

428194940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042 (or 2040 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 428194940 is about 20692.8717195077. The cubic root of 428194940 is about 753.7266022089.

The spelling of 428194940 in words is "four hundred twenty-eight million, one hundred ninety-four thousand, nine hundred forty".