823070380 has 48 divisors (see below), whose sum is σ = 1900039680. Its totient is φ = 297003200.

The previous prime is 823070357. The next prime is 823070383. The reversal of 823070380 is 83070328.

It is not an unprimeable number, because it can be changed into a prime (823070383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14541 + ... + 43099.

It is an arithmetic number, because the mean of its divisors is an integer number (39584160).

Almost surely, 2^823070380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 823070380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (950019840).

823070380 is an abundant number, since it is smaller than the sum of its proper divisors (1076969300).

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

823070380 is a wasteful number, since it uses less digits than its factorization.

823070380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28710 (or 28708 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 823070380 is about 28689.2031956274. The cubic root of 823070380 is about 937.1569371141.

The spelling of 823070380 in words is "eight hundred twenty-three million, seventy thousand, three hundred eighty".