81467316 has 48 divisors (see below), whose sum is σ = 241386880. Its totient is φ = 23276160.

The previous prime is 81467299. The next prime is 81467329. The reversal of 81467316 is 61376418.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53125 + ... + 54636.

Almost surely, 2^81467316 is an apocalyptic number.

It is an amenable number.

81467316 is an abundant number, since it is smaller than the sum of its proper divisors (159919564).

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

81467316 is a wasteful number, since it uses less digits than its factorization.

81467316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107781 (or 107773 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 81467316 is about 9025.9246617729. The cubic root of 81467316 is about 433.5053578677.

The spelling of 81467316 in words is "eighty-one million, four hundred sixty-seven thousand, three hundred sixteen".