290622728 has 16 divisors (see below), whose sum is σ = 594455760. Its totient is φ = 132101200.

The previous prime is 290622707. The next prime is 290622763. The reversal of 290622728 is 827226092.

It is a junction number, because it is equal to n+sod(n) for n = 290622691 and 290622700.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1651178 + ... + 1651353.

It is an arithmetic number, because the mean of its divisors is an integer number (37153485).

Almost surely, 2^290622728 is an apocalyptic number.

It is an amenable number.

290622728 is an abundant number, since it is smaller than the sum of its proper divisors (303833032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

290622728 is a wasteful number, since it uses less digits than its factorization.

290622728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3302548 (or 3302544 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 290622728 is about 17047.6604846530. The cubic root of 290622728 is about 662.3840379924.

The spelling of 290622728 in words is "two hundred ninety million, six hundred twenty-two thousand, seven hundred twenty-eight".