290985075 has 48 divisors (see below), whose sum is σ = 557821440. Its totient is φ = 148436640.

The previous prime is 290985061. The next prime is 290985103. The reversal of 290985075 is 570589092.

It is a happy number.

It is not a de Polignac number, because 290985075 - 2⁴ = 290985059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 290985075.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6154 + ... + 24896.

It is an arithmetic number, because the mean of its divisors is an integer number (11621280).

Almost surely, 2^290985075 is an apocalyptic number.

290985075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

290985075 is a deficient number, since it is larger than the sum of its proper divisors (266836365).

290985075 is a wasteful number, since it uses less digits than its factorization.

290985075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18785 (or 18774 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 290985075 is about 17058.2846441253. The cubic root of 290985075 is about 662.6592093927.

The spelling of 290985075 in words is "two hundred ninety million, nine hundred eighty-five thousand, seventy-five".