290220487 has 8 divisors (see below), whose sum is σ = 303037200. Its totient is φ = 277591104.

The previous prime is 290220473. The next prime is 290220503. The reversal of 290220487 is 784022092.

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 290220487 - 2¹⁵ = 290187719 is a prime.

It is a super-3 number, since 3×290220487³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290220407) 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, 43662 + ... + 49867.

It is an arithmetic number, because the mean of its divisors is an integer number (37879650).

Almost surely, 2^290220487 is an apocalyptic number.

290220487 is a deficient number, since it is larger than the sum of its proper divisors (12816713).

290220487 is a wasteful number, since it uses less digits than its factorization.

290220487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93665.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 290220487 is about 17035.8588571284. The cubic root of 290220487 is about 662.0783025155.

The spelling of 290220487 in words is "two hundred ninety million, two hundred twenty thousand, four hundred eighty-seven".