81124802 has 16 divisors (see below), whose sum is σ = 132976512. Its totient is φ = 36811920.

The previous prime is 81124787. The next prime is 81124807. The reversal of 81124802 is 20842118.

It is not an unprimeable number, because it can be changed into a prime (81124807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11543 + ... + 17189.

It is an arithmetic number, because the mean of its divisors is an integer number (8311032).

Almost surely, 2^81124802 is an apocalyptic number.

81124802 is a deficient number, since it is larger than the sum of its proper divisors (51851710).

81124802 is a wasteful number, since it uses less digits than its factorization.

81124802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6313.

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 81124802 is about 9006.9307757970. The cubic root of 81124802 is about 432.8969738901.

The spelling of 81124802 in words is "eighty-one million, one hundred twenty-four thousand, eight hundred two".