290320394 has 48 divisors (see below), whose sum is σ = 563222016. Its totient is φ = 111132000.

The previous prime is 290320351. The next prime is 290320397. The reversal of 290320394 is 493023092.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 290320394.

It is not an unprimeable number, because it can be changed into a prime (290320397) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35819 + ... + 43169.

It is an arithmetic number, because the mean of its divisors is an integer number (11733792).

Almost surely, 2^290320394 is an apocalyptic number.

290320394 is a deficient number, since it is larger than the sum of its proper divisors (272901622).

290320394 is a wasteful number, since it uses less digits than its factorization.

290320394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7411 (or 7404 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 290320394 is about 17038.7908608563. The cubic root of 290320394 is about 662.1542662180.

The spelling of 290320394 in words is "two hundred ninety million, three hundred twenty thousand, three hundred ninety-four".