290628845 has 32 divisors (see below), whose sum is σ = 398428800. Its totient is φ = 201740544.

The previous prime is 290628829. The next prime is 290628911. The reversal of 290628845 is 548826092.

It is a cyclic number.

It is not a de Polignac number, because 290628845 - 2⁴ = 290628829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 290628796 and 290628805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170819 + ... + 172511.

It is an arithmetic number, because the mean of its divisors is an integer number (12450900).

Almost surely, 2^290628845 is an apocalyptic number.

It is an amenable number.

290628845 is a deficient number, since it is larger than the sum of its proper divisors (107799955).

290628845 is a wasteful number, since it uses less digits than its factorization.

290628845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1869.

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 290628845 is about 17047.8398924908. The cubic root of 290628845 is about 662.3886852255.

The spelling of 290628845 in words is "two hundred ninety million, six hundred twenty-eight thousand, eight hundred forty-five".