20522828 has 6 divisors (see below), whose sum is σ = 35914956. Its totient is φ = 10261412.

The previous prime is 20522783. The next prime is 20522849. The reversal of 20522828 is 82822502.

It is a self number, because there is not a number n which added to its sum of digits gives 20522828.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2565350 + ... + 2565357.

It is an arithmetic number, because the mean of its divisors is an integer number (5985826).

Almost surely, 2^20522828 is an apocalyptic number.

It is an amenable number.

20522828 is a deficient number, since it is larger than the sum of its proper divisors (15392128).

20522828 is a wasteful number, since it uses less digits than its factorization.

20522828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5130711 (or 5130709 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 20522828 is about 4530.2127985339. The cubic root of 20522828 is about 273.7867344350.

The spelling of 20522828 in words is "twenty million, five hundred twenty-two thousand, eight hundred twenty-eight".