209793000 has 64 divisors (see below), whose sum is σ = 654563520. Its totient is φ = 55944000.

The previous prime is 209792993. The next prime is 209793011. The reversal of 209793000 is 397902.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31966 + ... + 37965.

It is an arithmetic number, because the mean of its divisors is an integer number (10227555).

Almost surely, 2^209793000 is an apocalyptic number.

209793000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

209793000 is an abundant number, since it is smaller than the sum of its proper divisors (444770520).

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

209793000 is a wasteful number, since it uses less digits than its factorization.

209793000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69955 (or 69941 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 209793000 is about 14484.2328067454. The cubic root of 209793000 is about 594.1968307783.

The spelling of 209793000 in words is "two hundred nine million, seven hundred ninety-three thousand".