81341424 has 30 divisors (see below), whose sum is σ = 227643416. Its totient is φ = 27113760.

The previous prime is 81341419. The next prime is 81341431. The reversal of 81341424 is 42414318.

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

It is a congruent number.

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, 282292 + ... + 282579.

Almost surely, 2^81341424 is an apocalyptic number.

It is an amenable number.

81341424 is an abundant number, since it is smaller than the sum of its proper divisors (146301992).

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

81341424 is a wasteful number, since it uses less digits than its factorization.

81341424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564885 (or 564876 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 81341424 is about 9018.9480539584. The cubic root of 81341424 is about 433.2819431497.

The spelling of 81341424 in words is "eighty-one million, three hundred forty-one thousand, four hundred twenty-four".