820760450 has 24 divisors (see below), whose sum is σ = 1527796560. Its totient is φ = 328050000.

The previous prime is 820760449. The next prime is 820760477. The reversal of 820760450 is 54067028.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67325 + ... + 78575.

It is an arithmetic number, because the mean of its divisors is an integer number (63658190).

Almost surely, 2^820760450 is an apocalyptic number.

820760450 is a deficient number, since it is larger than the sum of its proper divisors (707036110).

820760450 is a wasteful number, since it uses less digits than its factorization.

820760450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12722 (or 12717 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 820760450 is about 28648.9170825007. The cubic root of 820760450 is about 936.2794118281.

The spelling of 820760450 in words is "eight hundred twenty million, seven hundred sixty thousand, four hundred fifty".