423850820 has 12 divisors (see below), whose sum is σ = 890086764. Its totient is φ = 169540320.

The previous prime is 423850813. The next prime is 423850829. The reversal of 423850820 is 28058324.

It can be written as a sum of positive squares in 2 ways, for example, as 238455364 + 185395456 = 15442^2 + 13616^2 .

It is a super-2 number, since 2×423850820² = 359299035229344800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (423850829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10596251 + ... + 10596290.

It is an arithmetic number, because the mean of its divisors is an integer number (74173897).

Almost surely, 2^423850820 is an apocalyptic number.

It is an amenable number.

423850820 is an abundant number, since it is smaller than the sum of its proper divisors (466235944).

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

423850820 is a wasteful number, since it uses less digits than its factorization.

423850820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21192550 (or 21192548 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 423850820 is about 20587.6375526674. The cubic root of 423850820 is about 751.1690331648.

The spelling of 423850820 in words is "four hundred twenty-three million, eight hundred fifty thousand, eight hundred twenty".