810867152 has 10 divisors (see below), whose sum is σ = 1571055138. Its totient is φ = 405433568.

The previous prime is 810867133. The next prime is 810867157. The reversal of 810867152 is 251768018.

It can be written as a sum of positive squares in only one way, i.e., 514200976 + 296666176 = 22676^2 + 17224^2 .

It is a super-2 number, since 2×810867152² = 1315011076385182208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810867157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25339583 + ... + 25339614.

Almost surely, 2^810867152 is an apocalyptic number.

It is an amenable number.

810867152 is a deficient number, since it is larger than the sum of its proper divisors (760187986).

810867152 is a wasteful number, since it uses less digits than its factorization.

810867152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50679205 (or 50679199 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 38.

The square root of 810867152 is about 28475.7291741581. The cubic root of 810867152 is about 932.5022804200.

The spelling of 810867152 in words is "eight hundred ten million, eight hundred sixty-seven thousand, one hundred fifty-two".