81244848 has 30 divisors (see below), whose sum is σ = 210043972. Its totient is φ = 27060800.

The previous prime is 81244781. The next prime is 81244861. The reversal of 81244848 is 84844218.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61798 + ... + 63098.

Almost surely, 2^81244848 is an apocalyptic number.

It is an amenable number.

81244848 is an abundant number, since it is smaller than the sum of its proper divisors (128799124).

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

81244848 is an equidigital number, since it uses as much as digits as its factorization.

81244848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2613 (or 1306 counting only the distinct ones).

The product of its digits is 65536, while the sum is 39.

The square root of 81244848 is about 9013.5924025884. The cubic root of 81244848 is about 433.1103978844.

The spelling of 81244848 in words is "eighty-one million, two hundred forty-four thousand, eight hundred forty-eight".