820144316 has 12 divisors (see below), whose sum is σ = 1435631400. Its totient is φ = 409963920.

The previous prime is 820144261. The next prime is 820144321. The reversal of 820144316 is 613441028.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8615 + ... + 41406.

It is an arithmetic number, because the mean of its divisors is an integer number (119635950).

Almost surely, 2^820144316 is an apocalyptic number.

It is an amenable number.

820144316 is a deficient number, since it is larger than the sum of its proper divisors (615487084).

820144316 is a wasteful number, since it uses less digits than its factorization.

820144316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54124 (or 54122 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 820144316 is about 28638.1618823555. The cubic root of 820144316 is about 936.0450689941.

The spelling of 820144316 in words is "eight hundred twenty million, one hundred forty-four thousand, three hundred sixteen".