81414232 has 16 divisors (see below), whose sum is σ = 152756640. Its totient is φ = 40679136.

The previous prime is 81414211. The next prime is 81414247. The reversal of 81414232 is 23241418.

It is a junction number, because it is equal to n+sod(n) for n = 81414197 and 81414206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14038 + ... + 18970.

It is an arithmetic number, because the mean of its divisors is an integer number (9547290).

Almost surely, 2^81414232 is an apocalyptic number.

It is an amenable number.

81414232 is a deficient number, since it is larger than the sum of its proper divisors (71342408).

81414232 is a wasteful number, since it uses less digits than its factorization.

81414232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7002 (or 6998 counting only the distinct ones).

The product of its digits is 1536, while the sum is 25.

The square root of 81414232 is about 9022.9835420442. The cubic root of 81414232 is about 433.4111802286.

The spelling of 81414232 in words is "eighty-one million, four hundred fourteen thousand, two hundred thirty-two".