428823492 has 12 divisors (see below), whose sum is σ = 1000588176. Its totient is φ = 142941160.

The previous prime is 428823491. The next prime is 428823511. The reversal of 428823492 is 294328824.

It is a happy number.

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

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (428823491) 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, 17867634 + ... + 17867657.

It is an arithmetic number, because the mean of its divisors is an integer number (83382348).

Almost surely, 2^428823492 is an apocalyptic number.

It is an amenable number.

428823492 is an abundant number, since it is smaller than the sum of its proper divisors (571764684).

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

428823492 is a wasteful number, since it uses less digits than its factorization.

428823492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35735298 (or 35735296 counting only the distinct ones).

The product of its digits is 221184, while the sum is 42.

The square root of 428823492 is about 20708.0537955647. The cubic root of 428823492 is about 754.0952230536.

The spelling of 428823492 in words is "four hundred twenty-eight million, eight hundred twenty-three thousand, four hundred ninety-two".