290730106 has 4 divisors (see below), whose sum is σ = 436095162. Its totient is φ = 145365052.

The previous prime is 290730091. The next prime is 290730113. The reversal of 290730106 is 601037092.

290730106 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 211964481 + 78765625 = 14559^2 + 8875^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72682525 + ... + 72682528.

Almost surely, 2^290730106 is an apocalyptic number.

290730106 is a deficient number, since it is larger than the sum of its proper divisors (145365056).

290730106 is a wasteful number, since it uses less digits than its factorization.

290730106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145365055.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 290730106 is about 17050.8095408986. The cubic root of 290730106 is about 662.4656061888.

Adding to 290730106 its reverse (601037092), we get a palindrome (891767198).

The spelling of 290730106 in words is "two hundred ninety million, seven hundred thirty thousand, one hundred six".