811272464 has 20 divisors (see below), whose sum is σ = 1577214156. Its totient is φ = 404249472.

The previous prime is 811272463. The next prime is 811272523. The reversal of 811272464 is 464272118.

It can be written as a sum of positive squares in 2 ways, for example, as 701190400 + 110082064 = 26480^2 + 10492^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (811272463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81839 + ... + 91214.

Almost surely, 2^811272464 is an apocalyptic number.

It is an amenable number.

811272464 is a deficient number, since it is larger than the sum of its proper divisors (765941692).

811272464 is a wasteful number, since it uses less digits than its factorization.

811272464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173354 (or 173348 counting only the distinct ones).

The product of its digits is 21504, while the sum is 35.

The square root of 811272464 is about 28482.8450826107. The cubic root of 811272464 is about 932.6576249823.

The spelling of 811272464 in words is "eight hundred eleven million, two hundred seventy-two thousand, four hundred sixty-four".