81126296 has 16 divisors (see below), whose sum is σ = 153083040. Its totient is φ = 40304160.

The previous prime is 81126293. The next prime is 81126301. The reversal of 81126296 is 69262118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81126293) 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, 31040 + ... + 33551.

It is an arithmetic number, because the mean of its divisors is an integer number (9567690).

Almost surely, 2^81126296 is an apocalyptic number.

It is an amenable number.

81126296 is a deficient number, since it is larger than the sum of its proper divisors (71956744).

81126296 is a wasteful number, since it uses less digits than its factorization.

81126296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64754 (or 64750 counting only the distinct ones).

The product of its digits is 10368, while the sum is 35.

The square root of 81126296 is about 9007.0137115472. The cubic root of 81126296 is about 432.8996312940.

The spelling of 81126296 in words is "eighty-one million, one hundred twenty-six thousand, two hundred ninety-six".