820365272 has 16 divisors (see below), whose sum is σ = 1539813240. Its totient is φ = 409748416.

The previous prime is 820365241. The next prime is 820365281. The reversal of 820365272 is 272563028.

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, 46178 + ... + 61425.

Almost surely, 2^820365272 is an apocalyptic number.

It is an amenable number.

820365272 is a deficient number, since it is larger than the sum of its proper divisors (719447968).

820365272 is a wasteful number, since it uses less digits than its factorization.

820365272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108562 (or 108558 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 820365272 is about 28642.0193422182. The cubic root of 820365272 is about 936.1291217635.

The spelling of 820365272 in words is "eight hundred twenty million, three hundred sixty-five thousand, two hundred seventy-two".