290028478 has 8 divisors (see below), whose sum is σ = 450044280. Its totient is φ = 140013720.

The previous prime is 290028457. The next prime is 290028523. The reversal of 290028478 is 874820092.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 290028478.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2500188 + ... + 2500303.

It is an arithmetic number, because the mean of its divisors is an integer number (56255535).

Almost surely, 2^290028478 is an apocalyptic number.

290028478 is a deficient number, since it is larger than the sum of its proper divisors (160015802).

290028478 is a wasteful number, since it uses less digits than its factorization.

290028478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5000522.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 290028478 is about 17030.2224882707. Note that the first 3 decimals coincide. The cubic root of 290028478 is about 661.9322606336.

The spelling of 290028478 in words is "two hundred ninety million, twenty-eight thousand, four hundred seventy-eight".