81828303 has 8 divisors (see below), whose sum is σ = 109162416. Its totient is φ = 54523200.

The previous prime is 81828301. The next prime is 81828311. The reversal of 81828303 is 30382818.

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

It is not a de Polignac number, because 81828303 - 2¹ = 81828301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81828301) 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, 523 + ... + 12803.

It is an arithmetic number, because the mean of its divisors is an integer number (13645302).

Almost surely, 2^81828303 is an apocalyptic number.

81828303 is a deficient number, since it is larger than the sum of its proper divisors (27334113).

81828303 is a wasteful number, since it uses less digits than its factorization.

81828303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14505.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 81828303 is about 9045.8997894074. The cubic root of 81828303 is about 434.1447113114.

The spelling of 81828303 in words is "eighty-one million, eight hundred twenty-eight thousand, three hundred three".