81414304 has 24 divisors (see below), whose sum is σ = 160604640. Its totient is φ = 40625856.

The previous prime is 81414301. The next prime is 81414317. The reversal of 81414304 is 40341418.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81414301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15757 + ... + 20275.

It is an arithmetic number, because the mean of its divisors is an integer number (6691860).

Almost surely, 2^81414304 is an apocalyptic number.

It is an amenable number.

81414304 is a deficient number, since it is larger than the sum of its proper divisors (79190336).

81414304 is a wasteful number, since it uses less digits than its factorization.

81414304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5092 (or 5084 counting only the distinct ones).

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

The square root of 81414304 is about 9022.9875318544. The cubic root of 81414304 is about 433.4113079933.

It can be divided in two parts, 81414 and 304, that added together give a palindrome (81718).

The spelling of 81414304 in words is "eighty-one million, four hundred fourteen thousand, three hundred four".