81796454 has 8 divisors (see below), whose sum is σ = 123043320. Its totient is φ = 40782016.

The previous prime is 81796453. The next prime is 81796457. The reversal of 81796454 is 45469718.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81796453) 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, 57224 + ... + 58635.

It is an arithmetic number, because the mean of its divisors is an integer number (15380415).

Almost surely, 2^81796454 is an apocalyptic number.

81796454 is a deficient number, since it is larger than the sum of its proper divisors (41246866).

81796454 is a wasteful number, since it uses less digits than its factorization.

81796454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116214.

The product of its digits is 241920, while the sum is 44.

The square root of 81796454 is about 9044.1392072436. The cubic root of 81796454 is about 434.0883784424.

The spelling of 81796454 in words is "eighty-one million, seven hundred ninety-six thousand, four hundred fifty-four".