81241433 has 8 divisors (see below), whose sum is σ = 99989568. Its totient is φ = 64278864.

The previous prime is 81241423. The next prime is 81241439. The reversal of 81241433 is 33414218.

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

It is not a de Polignac number, because 81241433 - 2⁴ = 81241417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81241439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 446291 + ... + 446472.

It is an arithmetic number, because the mean of its divisors is an integer number (12498696).

Almost surely, 2^81241433 is an apocalyptic number.

It is an amenable number.

81241433 is a deficient number, since it is larger than the sum of its proper divisors (18748135).

81241433 is a wasteful number, since it uses less digits than its factorization.

81241433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892783.

The product of its digits is 2304, while the sum is 26.

The square root of 81241433 is about 9013.4029644746. The cubic root of 81241433 is about 433.1043294268.

The spelling of 81241433 in words is "eighty-one million, two hundred forty-one thousand, four hundred thirty-three".