183820420 has 48 divisors (see below), whose sum is σ = 447406848. Its totient is φ = 62133120.

The previous prime is 183820381. The next prime is 183820451. The reversal of 183820420 is 24028381.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 694 + ... + 19186.

It is an arithmetic number, because the mean of its divisors is an integer number (9320976).

Almost surely, 2^183820420 is an apocalyptic number.

183820420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 183820420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223703424).

183820420 is an abundant number, since it is smaller than the sum of its proper divisors (263586428).

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

183820420 is a wasteful number, since it uses less digits than its factorization.

183820420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18580 (or 18578 counting only the distinct ones).

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

The square root of 183820420 is about 13558.0389437411. The cubic root of 183820420 is about 568.5882989171.

The spelling of 183820420 in words is "one hundred eighty-three million, eight hundred twenty thousand, four hundred twenty".