209080828 has 24 divisors (see below), whose sum is σ = 401197104. Its totient is φ = 94550400.

The previous prime is 209080819. The next prime is 209080831. The reversal of 209080828 is 828080902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3393 + ... + 20728.

It is an arithmetic number, because the mean of its divisors is an integer number (16716546).

Almost surely, 2^209080828 is an apocalyptic number.

It is an amenable number.

209080828 is a deficient number, since it is larger than the sum of its proper divisors (192116276).

209080828 is a wasteful number, since it uses less digits than its factorization.

209080828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24333 (or 24331 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 209080828 is about 14459.6275194073. The cubic root of 209080828 is about 593.5237068138.

The spelling of 209080828 in words is "two hundred nine million, eighty thousand, eight hundred twenty-eight".