81262936 has 16 divisors (see below), whose sum is σ = 152922240. Its totient is φ = 40483680.

The previous prime is 81262931. The next prime is 81262967. The reversal of 81262936 is 63926218.

It is a junction number, because it is equal to n+sod(n) for n = 81262895 and 81262904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81262931) 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, 16120 + ... + 20551.

It is an arithmetic number, because the mean of its divisors is an integer number (9557640).

Almost surely, 2^81262936 is an apocalyptic number.

It is an amenable number.

81262936 is a deficient number, since it is larger than the sum of its proper divisors (71659304).

81262936 is a wasteful number, since it uses less digits than its factorization.

81262936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36954 (or 36950 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 81262936 is about 9014.5957202750. The cubic root of 81262936 is about 433.1425374385.

The spelling of 81262936 in words is "eighty-one million, two hundred sixty-two thousand, nine hundred thirty-six".