830120820 has 24 divisors (see below), whose sum is σ = 2324338464. Its totient is φ = 221365536.

The previous prime is 830120779. The next prime is 830120827. The reversal of 830120820 is 28021038.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (830120827) 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, 6917614 + ... + 6917733.

It is an arithmetic number, because the mean of its divisors is an integer number (96847436).

Almost surely, 2^830120820 is an apocalyptic number.

It is an amenable number.

830120820 is an abundant number, since it is smaller than the sum of its proper divisors (1494217644).

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

830120820 is a wasteful number, since it uses less digits than its factorization.

830120820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13835359 (or 13835357 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 830120820 is about 28811.8173671846. The cubic root of 830120820 is about 939.8252353535.

Adding to 830120820 its reverse (28021038), we get a palindrome (858141858).

The spelling of 830120820 in words is "eight hundred thirty million, one hundred twenty thousand, eight hundred twenty".