81466032 has 40 divisors (see below), whose sum is σ = 212635696. Its totient is φ = 26873856.

The previous prime is 81466019. The next prime is 81466067. The reversal of 81466032 is 23066418.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4093 + ... + 13404.

Almost surely, 2^81466032 is an apocalyptic number.

It is an amenable number.

81466032 is an abundant number, since it is smaller than the sum of its proper divisors (131169664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81466032 is a wasteful number, since it uses less digits than its factorization.

81466032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17605 (or 17599 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 81466032 is about 9025.8535330461. The cubic root of 81466032 is about 433.5030803744.

The spelling of 81466032 in words is "eighty-one million, four hundred sixty-six thousand, thirty-two".