81432088 has 8 divisors (see below), whose sum is σ = 152685180. Its totient is φ = 40716040.

The previous prime is 81432083. The next prime is 81432103. The reversal of 81432088 is 88023418.

81432088 is nontrivially palindromic in base 14.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81432083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5089498 + ... + 5089513.

Almost surely, 2^81432088 is an apocalyptic number.

It is an amenable number.

81432088 is a deficient number, since it is larger than the sum of its proper divisors (71253092).

81432088 is a wasteful number, since it uses less digits than its factorization.

81432088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10179017 (or 10179013 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 81432088 is about 9023.9729609524. The cubic root of 81432088 is about 433.4428635683.

The spelling of 81432088 in words is "eighty-one million, four hundred thirty-two thousand, eighty-eight".