81148026 has 8 divisors (see below), whose sum is σ = 162296064. Its totient is φ = 27049340.

The previous prime is 81148019. The next prime is 81148027. The reversal of 81148026 is 62084118.

It is a sphenic number, since it is the product of 3 distinct primes.

81148026 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 81147984 and 81148002.

It is not an unprimeable number, because it can be changed into a prime (81148027) 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, 6762330 + ... + 6762341.

It is an arithmetic number, because the mean of its divisors is an integer number (20287008).

Almost surely, 2^81148026 is an apocalyptic number.

81148026 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

81148026 is a wasteful number, since it uses less digits than its factorization.

81148026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13524676.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 81148026 is about 9008.2199129462. The cubic root of 81148026 is about 432.9382791377.

The spelling of 81148026 in words is "eighty-one million, one hundred forty-eight thousand, twenty-six".