209300920 has 32 divisors (see below), whose sum is σ = 491404320. Its totient is φ = 80080000.

The previous prime is 209300893. The next prime is 209300921. The reversal of 209300920 is 29003902.

It is a super-2 number, since 2×209300920² = 87613750225692800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209300921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112831 + ... + 114670.

It is an arithmetic number, because the mean of its divisors is an integer number (15356385).

Almost surely, 2^209300920 is an apocalyptic number.

209300920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

209300920 is an abundant number, since it is smaller than the sum of its proper divisors (282103400).

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

209300920 is a wasteful number, since it uses less digits than its factorization.

209300920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227535 (or 227531 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 209300920 is about 14467.2360871039. The cubic root of 209300920 is about 593.7318942586.

The spelling of 209300920 in words is "two hundred nine million, three hundred thousand, nine hundred twenty".