290872873 has 8 divisors (see below), whose sum is σ = 316307592. Its totient is φ = 266363136.

The previous prime is 290872867. The next prime is 290872903. The reversal of 290872873 is 378278092.

It can be written as a sum of positive squares in 4 ways, for example, as 60652944 + 230219929 = 7788^2 + 15173^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 290872873 - 2²⁵ = 257318441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (290872853) 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, 230590 + ... + 231847.

It is an arithmetic number, because the mean of its divisors is an integer number (39538449).

Almost surely, 2^290872873 is an apocalyptic number.

It is an amenable number.

290872873 is a deficient number, since it is larger than the sum of its proper divisors (25434719).

290872873 is a wasteful number, since it uses less digits than its factorization.

290872873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462491.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 290872873 is about 17054.9955438282. The cubic root of 290872873 is about 662.5740260465.

The spelling of 290872873 in words is "two hundred ninety million, eight hundred seventy-two thousand, eight hundred seventy-three".