805072892 has 24 divisors (see below), whose sum is σ = 1518347712. Its totient is φ = 371304000.

The previous prime is 805072867. The next prime is 805072897. The reversal of 805072892 is 298270508.

It is a happy number.

It is a super-2 number, since 2×805072892² = 1296284722866487328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805072897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79517 + ... + 89067.

It is an arithmetic number, because the mean of its divisors is an integer number (63264488).

Almost surely, 2^805072892 is an apocalyptic number.

It is an amenable number.

805072892 is a deficient number, since it is larger than the sum of its proper divisors (713274820).

805072892 is a wasteful number, since it uses less digits than its factorization.

805072892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11189 (or 11187 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 805072892 is about 28373.8064418576. The cubic root of 805072892 is about 930.2758236865.

The spelling of 805072892 in words is "eight hundred five million, seventy-two thousand, eight hundred ninety-two".