423620820 has 96 divisors (see below), whose sum is σ = 1506220800. Its totient is φ = 96826752.

The previous prime is 423620803. The next prime is 423620839. The reversal of 423620820 is 28026324.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52255 + ... + 59814.

It is an arithmetic number, because the mean of its divisors is an integer number (15689800).

Almost surely, 2^423620820 is an apocalyptic number.

It is an amenable number.

423620820 is an abundant number, since it is smaller than the sum of its proper divisors (1082599980).

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

423620820 is a wasteful number, since it uses less digits than its factorization.

423620820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112094 (or 112086 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 423620820 is about 20582.0509182151. The cubic root of 423620820 is about 751.0331361860.

The spelling of 423620820 in words is "four hundred twenty-three million, six hundred twenty thousand, eight hundred twenty".