81467080 has 16 divisors (see below), whose sum is σ = 183301020. Its totient is φ = 32586816.

The previous prime is 81467059. The next prime is 81467093. The reversal of 81467080 is 8076418.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 76422564 + 5044516 = 8742^2 + 2246^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1018299 + ... + 1018378.

Almost surely, 2^81467080 is an apocalyptic number.

It is an amenable number.

81467080 is an abundant number, since it is smaller than the sum of its proper divisors (101833940).

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

81467080 is a wasteful number, since it uses less digits than its factorization.

81467080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2036688 (or 2036684 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 81467080 is about 9025.9115883106. The cubic root of 81467080 is about 433.5049392648.

The spelling of 81467080 in words is "eighty-one million, four hundred sixty-seven thousand, eighty".