421858828 has 12 divisors (see below), whose sum is σ = 739228392. Its totient is φ = 210650720.

The previous prime is 421858823. The next prime is 421858861. The reversal of 421858828 is 828858124.

It is not an unprimeable number, because it can be changed into a prime (421858823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66250 + ... + 72337.

It is an arithmetic number, because the mean of its divisors is an integer number (61602366).

Almost surely, 2^421858828 is an apocalyptic number.

It is an amenable number.

421858828 is a deficient number, since it is larger than the sum of its proper divisors (317369564).

421858828 is a wasteful number, since it uses less digits than its factorization.

421858828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139352 (or 139350 counting only the distinct ones).

The product of its digits is 327680, while the sum is 46.

The square root of 421858828 is about 20539.2022240398. The cubic root of 421858828 is about 749.9904164701.

The spelling of 421858828 in words is "four hundred twenty-one million, eight hundred fifty-eight thousand, eight hundred twenty-eight".