290872745 has 8 divisors (see below), whose sum is σ = 355633416. Its totient is φ = 228307456.

The previous prime is 290872741. The next prime is 290872763. The reversal of 290872745 is 547278092.

It can be written as a sum of positive squares in 4 ways, for example, as 67190809 + 223681936 = 8197^2 + 14956^2 .

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 290872745 - 2² = 290872741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 290872696 and 290872705.

It is not an unprimeable number, because it can be changed into a prime (290872741) 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, 548552 + ... + 549081.

It is an arithmetic number, because the mean of its divisors is an integer number (44454177).

Almost surely, 2^290872745 is an apocalyptic number.

It is an amenable number.

290872745 is a deficient number, since it is larger than the sum of its proper divisors (64760671).

290872745 is a wasteful number, since it uses less digits than its factorization.

290872745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097691.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 290872745 is about 17054.9917912616. The cubic root of 290872745 is about 662.5739288568.

The spelling of 290872745 in words is "two hundred ninety million, eight hundred seventy-two thousand, seven hundred forty-five".