188620020 has 72 divisors (see below), whose sum is σ = 580245120. Its totient is φ = 49586880.

The previous prime is 188620013. The next prime is 188620037. The reversal of 188620020 is 20026881.

188620020 is a `hidden beast` number, since 18 + 8 + 620 + 0 + 20 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5401 + ... + 20159.

It is an arithmetic number, because the mean of its divisors is an integer number (8058960).

Almost surely, 2^188620020 is an apocalyptic number.

188620020 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 188620020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290122560).

188620020 is an abundant number, since it is smaller than the sum of its proper divisors (391625100).

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

188620020 is a wasteful number, since it uses less digits than its factorization.

188620020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14845 (or 14840 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 188620020 is about 13733.9003928236. The cubic root of 188620020 is about 573.4945065472.

The spelling of 188620020 in words is "one hundred eighty-eight million, six hundred twenty thousand, twenty".