823009380 has 24 divisors (see below), whose sum is σ = 2304426432. Its totient is φ = 219469152.

The previous prime is 823009361. The next prime is 823009393. The reversal of 823009380 is 83900328.

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, 6858352 + ... + 6858471.

It is an arithmetic number, because the mean of its divisors is an integer number (96017768).

Almost surely, 2^823009380 is an apocalyptic number.

It is an amenable number.

823009380 is an abundant number, since it is smaller than the sum of its proper divisors (1481417052).

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

823009380 is a wasteful number, since it uses less digits than its factorization.

823009380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13716835 (or 13716833 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 823009380 is about 28688.1400582192. The cubic root of 823009380 is about 937.1337847864.

The spelling of 823009380 in words is "eight hundred twenty-three million, nine thousand, three hundred eighty".