290212198 has 4 divisors (see below), whose sum is σ = 435318300. Its totient is φ = 145106098.

The previous prime is 290212189. The next prime is 290212199. The reversal of 290212198 is 891212092.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290212199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72553048 + ... + 72553051.

It is an arithmetic number, because the mean of its divisors is an integer number (108829575).

Almost surely, 2^290212198 is an apocalyptic number.

290212198 is a deficient number, since it is larger than the sum of its proper divisors (145106102).

290212198 is a wasteful number, since it uses less digits than its factorization.

290212198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145106101.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 290212198 is about 17035.6155744370. The cubic root of 290212198 is about 662.0719992397.

The spelling of 290212198 in words is "two hundred ninety million, two hundred twelve thousand, one hundred ninety-eight".