201944820 has 96 divisors (see below), whose sum is σ = 704987136. Its totient is φ = 41961600.

The previous prime is 201944797. The next prime is 201944837. The reversal of 201944820 is 28449102.

201944820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17236 + ... + 26475.

It is an arithmetic number, because the mean of its divisors is an integer number (7343616).

Almost surely, 2^201944820 is an apocalyptic number.

201944820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201944820 is an abundant number, since it is smaller than the sum of its proper divisors (503042316).

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

201944820 is a wasteful number, since it uses less digits than its factorization.

201944820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43741 (or 43739 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 201944820 is about 14210.7290453375. The cubic root of 201944820 is about 586.6929991337.

The spelling of 201944820 in words is "two hundred one million, nine hundred forty-four thousand, eight hundred twenty".