81014384 has 40 divisors (see below), whose sum is σ = 181314288. Its totient is φ = 34657280.

The previous prime is 81014363. The next prime is 81014389. The reversal of 81014384 is 48341018.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81014389) 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, 10547 + ... + 16530.

Almost surely, 2^81014384 is an apocalyptic number.

It is an amenable number.

81014384 is an abundant number, since it is smaller than the sum of its proper divisors (100299904).

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

81014384 is a wasteful number, since it uses less digits than its factorization.

81014384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27113 (or 27107 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 81014384 is about 9000.7990756377. The cubic root of 81014384 is about 432.7004810798.

The spelling of 81014384 in words is "eighty-one million, fourteen thousand, three hundred eighty-four".