290542287 has 8 divisors (see below), whose sum is σ = 442731136. Its totient is φ = 166024152.

The previous prime is 290542283. The next prime is 290542313. The reversal of 290542287 is 782245092.

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

It is not a de Polignac number, because 290542287 - 2² = 290542283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290542283) 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, 6917653 + ... + 6917694.

It is an arithmetic number, because the mean of its divisors is an integer number (55341392).

Almost surely, 2^290542287 is an apocalyptic number.

290542287 is a deficient number, since it is larger than the sum of its proper divisors (152188849).

290542287 is a wasteful number, since it uses less digits than its factorization.

290542287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13835357.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 290542287 is about 17045.3010240359. The cubic root of 290542287 is about 662.3229189469.

The spelling of 290542287 in words is "two hundred ninety million, five hundred forty-two thousand, two hundred eighty-seven".