290243066 has 16 divisors (see below), whose sum is σ = 443335680. Its totient is φ = 142471200.

The previous prime is 290243039. The next prime is 290243081. The reversal of 290243066 is 660342092.

It is a super-2 number, since 2×290243066² = 168482074722160712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134750 + ... + 136886.

It is an arithmetic number, because the mean of its divisors is an integer number (27708480).

Almost surely, 2^290243066 is an apocalyptic number.

290243066 is a deficient number, since it is larger than the sum of its proper divisors (153092614).

290243066 is a wasteful number, since it uses less digits than its factorization.

290243066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3349.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 290243066 is about 17036.5215346326. The cubic root of 290243066 is about 662.0954718505.

The spelling of 290243066 in words is "two hundred ninety million, two hundred forty-three thousand, sixty-six".