183420820 has 48 divisors (see below), whose sum is σ = 444927168. Its totient is φ = 62773760.

The previous prime is 183420781. The next prime is 183420821. The reversal of 183420820 is 28024381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (183420821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20782 + ... + 28261.

It is an arithmetic number, because the mean of its divisors is an integer number (9269316).

Almost surely, 2^183420820 is an apocalyptic number.

183420820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

183420820 is an abundant number, since it is smaller than the sum of its proper divisors (261506348).

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

183420820 is a wasteful number, since it uses less digits than its factorization.

183420820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49080 (or 49078 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 183420820 is about 13543.2942816731. The cubic root of 183420820 is about 568.1759894054.

The spelling of 183420820 in words is "one hundred eighty-three million, four hundred twenty thousand, eight hundred twenty".