290828 has 6 divisors (see below), whose sum is σ = 508956. Its totient is φ = 145412.

The previous prime is 290827. The next prime is 290837. The reversal of 290828 is 828092.

It is a self number, because there is not a number n which added to its sum of digits gives 290828.

It is not an unprimeable number, because it can be changed into a prime (290821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36350 + ... + 36357.

It is an arithmetic number, because the mean of its divisors is an integer number (84826).

2²⁹⁰⁸²⁸ is an apocalyptic number.

It is an amenable number.

290828 is a deficient number, since it is larger than the sum of its proper divisors (218128).

290828 is a wasteful number, since it uses less digits than its factorization.

290828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72711 (or 72709 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 290828 is about 539.2847114466. The cubic root of 290828 is about 66.2539952497.

The spelling of 290828 in words is "two hundred ninety thousand, eight hundred twenty-eight".