201390220 has 24 divisors (see below), whose sum is σ = 423991008. Its totient is φ = 80352000.

The previous prime is 201390191. The next prime is 201390221. The reversal of 201390220 is 22093102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (201390221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4536 + ... + 20575.

It is an arithmetic number, because the mean of its divisors is an integer number (17666292).

Almost surely, 2^201390220 is an apocalyptic number.

201390220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201390220 is an abundant number, since it is smaller than the sum of its proper divisors (222600788).

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

201390220 is a wasteful number, since it uses less digits than its factorization.

201390220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25521 (or 25519 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 201390220 is about 14191.2022041827. The cubic root of 201390220 is about 586.1554294225.

The spelling of 201390220 in words is "two hundred one million, three hundred ninety thousand, two hundred twenty".