809620272 has 50 divisors (see below), whose sum is σ = 2343279708. Its totient is φ = 269872992.

The previous prime is 809620271. The next prime is 809620277. The reversal of 809620272 is 272026908.

809620272 is a `hidden beast` number, since 8 + 0 + 9 + 620 + 27 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (809620271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 311058 + ... + 313649.

Almost surely, 2^809620272 is an apocalyptic number.

It is an amenable number.

809620272 is an abundant number, since it is smaller than the sum of its proper divisors (1533659436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

809620272 is a wasteful number, since it uses less digits than its factorization.

809620272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624727 (or 624712 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 809620272 is about 28453.8270185225. The cubic root of 809620272 is about 932.0240619574.

The spelling of 809620272 in words is "eight hundred nine million, six hundred twenty thousand, two hundred seventy-two".