201974220 has 144 divisors (see below), whose sum is σ = 705327168. Its totient is φ = 45826560.

The previous prime is 201974203. The next prime is 201974243. The reversal of 201974220 is 22479102.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 197310 + ... + 198330.

Almost surely, 2^201974220 is an apocalyptic number.

201974220 is a gapful number since it is divisible by the number (20) 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 201974220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352663584).

201974220 is an abundant number, since it is smaller than the sum of its proper divisors (503352948).

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

201974220 is a wasteful number, since it uses less digits than its factorization.

201974220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200 (or 1195 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 201974220 is about 14211.7634373782. The cubic root of 201974220 is about 586.7214688533.

The spelling of 201974220 in words is "two hundred one million, nine hundred seventy-four thousand, two hundred twenty".