81948027 has 16 divisors (see below), whose sum is σ = 125323520. Its totient is φ = 46658592.

The previous prime is 81948023. The next prime is 81948029. The reversal of 81948027 is 72084918.

It is not a de Polignac number, because 81948027 - 2² = 81948023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81948023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 952 + ... + 12837.

It is an arithmetic number, because the mean of its divisors is an integer number (7832720).

Almost surely, 2^81948027 is an apocalyptic number.

81948027 is a deficient number, since it is larger than the sum of its proper divisors (43375493).

81948027 is a wasteful number, since it uses less digits than its factorization.

81948027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14082.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 81948027 is about 9052.5149544201. The cubic root of 81948027 is about 434.3563422933.

The spelling of 81948027 in words is "eighty-one million, nine hundred forty-eight thousand, twenty-seven".