81602382 has 32 divisors (see below), whose sum is σ = 169714944. Its totient is φ = 26136000.

The previous prime is 81602333. The next prime is 81602399. The reversal of 81602382 is 28320618.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14007 + ... + 18957.

It is an arithmetic number, because the mean of its divisors is an integer number (5303592).

Almost surely, 2^81602382 is an apocalyptic number.

81602382 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

81602382 is an abundant number, since it is smaller than the sum of its proper divisors (88112562).

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

81602382 is a wasteful number, since it uses less digits than its factorization.

81602382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5064.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 81602382 is about 9033.4036774629. The cubic root of 81602382 is about 433.7447974749.

The spelling of 81602382 in words is "eighty-one million, six hundred two thousand, three hundred eighty-two".