81488234 has 8 divisors (see below), whose sum is σ = 122351808. Its totient is φ = 40704300.

The previous prime is 81488219. The next prime is 81488257. The reversal of 81488234 is 43288418.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17282 + ... + 21485.

It is an arithmetic number, because the mean of its divisors is an integer number (15293976).

Almost surely, 2^81488234 is an apocalyptic number.

81488234 is a deficient number, since it is larger than the sum of its proper divisors (40863574).

81488234 is a wasteful number, since it uses less digits than its factorization.

81488234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39820.

The product of its digits is 49152, while the sum is 38.

The square root of 81488234 is about 9027.0833606431. The cubic root of 81488234 is about 433.5424577728.

The spelling of 81488234 in words is "eighty-one million, four hundred eighty-eight thousand, two hundred thirty-four".