823829970 has 32 divisors (see below), whose sum is σ = 2045373120. Its totient is φ = 212112320.

The previous prime is 823829891. The next prime is 823829971. The reversal of 823829970 is 79928328.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (823829971) 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, 472596 + ... + 474335.

It is an arithmetic number, because the mean of its divisors is an integer number (63917910).

Almost surely, 2^823829970 is an apocalyptic number.

823829970 is an abundant number, since it is smaller than the sum of its proper divisors (1221543150).

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

823829970 is a wasteful number, since it uses less digits than its factorization.

823829970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946970.

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 823829970 is about 28702.4383981570. The cubic root of 823829970 is about 937.4451409677.

The spelling of 823829970 in words is "eight hundred twenty-three million, eight hundred twenty-nine thousand, nine hundred seventy".