201238290 has 64 divisors (see below), whose sum is σ = 585429120. Its totient is φ = 48784320.

The previous prime is 201238277. The next prime is 201238309. The reversal of 201238290 is 92832102.

It is a happy number.

It is a super-3 number, since 3×201238290³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30909 + ... + 36848.

It is an arithmetic number, because the mean of its divisors is an integer number (9147330).

Almost surely, 2^201238290 is an apocalyptic number.

201238290 is an abundant number, since it is smaller than the sum of its proper divisors (384190830).

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

201238290 is a wasteful number, since it uses less digits than its factorization.

201238290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67784 (or 67778 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 201238290 is about 14185.8482298381. The cubic root of 201238290 is about 586.0079926069.

The spelling of 201238290 in words is "two hundred one million, two hundred thirty-eight thousand, two hundred ninety".