201622190 has 32 divisors (see below), whose sum is σ = 452473344. Its totient is φ = 62843040.

The previous prime is 201622177. The next prime is 201622207. The reversal of 201622190 is 91226102.

It is a super-2 number, since 2×201622190² = 81303015000792200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 130154 + ... + 131693.

It is an arithmetic number, because the mean of its divisors is an integer number (14139792).

Almost surely, 2^201622190 is an apocalyptic number.

201622190 is an abundant number, since it is smaller than the sum of its proper divisors (250851154).

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

201622190 is a wasteful number, since it uses less digits than its factorization.

201622190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261872.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 201622190 is about 14199.3728734758. The cubic root of 201622190 is about 586.3803961609.

Adding to 201622190 its reverse (91226102), we get a palindrome (292848292).

The spelling of 201622190 in words is "two hundred one million, six hundred twenty-two thousand, one hundred ninety".