820230046 has 4 divisors (see below), whose sum is σ = 1230345072. Its totient is φ = 410115022.

The previous prime is 820229941. The next prime is 820230053. The reversal of 820230046 is 640032028.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×820230046² = 1345554656722324232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 820230046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205057510 + ... + 205057513.

It is an arithmetic number, because the mean of its divisors is an integer number (307586268).

Almost surely, 2^820230046 is an apocalyptic number.

820230046 is a deficient number, since it is larger than the sum of its proper divisors (410115026).

820230046 is a wasteful number, since it uses less digits than its factorization.

820230046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410115025.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 820230046 is about 28639.6586222671. The cubic root of 820230046 is about 936.0776829078.

The spelling of 820230046 in words is "eight hundred twenty million, two hundred thirty thousand, forty-six".