820413922 has 8 divisors (see below), whose sum is σ = 1237496400. Its totient is φ = 407915124.

The previous prime is 820413907. The next prime is 820413929. The reversal of 820413922 is 229314028.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×820413922² = 1346158006822844168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (820413929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1145472 + ... + 1146187.

It is an arithmetic number, because the mean of its divisors is an integer number (154687050).

Almost surely, 2^820413922 is an apocalyptic number.

820413922 is a deficient number, since it is larger than the sum of its proper divisors (417082478).

820413922 is a wasteful number, since it uses less digits than its factorization.

820413922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291840.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 820413922 is about 28642.8686063390. The cubic root of 820413922 is about 936.1476264399.

The spelling of 820413922 in words is "eight hundred twenty million, four hundred thirteen thousand, nine hundred twenty-two".