81412848 has 120 divisors (see below), whose sum is σ = 251472000. Its totient is φ = 24382080.

The previous prime is 81412843. The next prime is 81412867. The reversal of 81412848 is 84821418.

It is a happy number.

It is a super-2 number, since 2×81412848² = 13256103638942208, which contains 22 as substring.

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

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81412841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162903 + ... + 163401.

It is an arithmetic number, because the mean of its divisors is an integer number (2095600).

Almost surely, 2^81412848 is an apocalyptic number.

81412848 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 81412848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125736000).

81412848 is an abundant number, since it is smaller than the sum of its proper divisors (170059152).

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

81412848 is a wasteful number, since it uses less digits than its factorization.

81412848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627 (or 618 counting only the distinct ones).

The product of its digits is 16384, while the sum is 36.

The square root of 81412848 is about 9022.9068486824. The cubic root of 81412848 is about 433.4087242924.

The spelling of 81412848 in words is "eighty-one million, four hundred twelve thousand, eight hundred forty-eight".