820237316 has 24 divisors (see below), whose sum is σ = 1520191680. Its totient is φ = 386429472.

The previous prime is 820237273. The next prime is 820237331. The reversal of 820237316 is 613732028.

It is a happy number.

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, 60371 + ... + 72698.

It is an arithmetic number, because the mean of its divisors is an integer number (63341320).

Almost surely, 2^820237316 is an apocalyptic number.

It is an amenable number.

820237316 is a deficient number, since it is larger than the sum of its proper divisors (699954364).

820237316 is a wasteful number, since it uses less digits than its factorization.

820237316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133163 (or 133161 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 820237316 is about 28639.7855438898. The cubic root of 820237316 is about 936.0804484996.

The spelling of 820237316 in words is "eight hundred twenty million, two hundred thirty-seven thousand, three hundred sixteen".