81364362 has 32 divisors (see below), whose sum is σ = 166757184. Its totient is φ = 26457600.

The previous prime is 81364357. The next prime is 81364373. The reversal of 81364362 is 26346318.

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, 47098 + ... + 48794.

It is an arithmetic number, because the mean of its divisors is an integer number (5211162).

Almost surely, 2^81364362 is an apocalyptic number.

81364362 is an abundant number, since it is smaller than the sum of its proper divisors (85392822).

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

81364362 is a wasteful number, since it uses less digits than its factorization.

81364362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1894.

The product of its digits is 20736, while the sum is 33.

The square root of 81364362 is about 9020.2196203862. The cubic root of 81364362 is about 433.3226673246.

The spelling of 81364362 in words is "eighty-one million, three hundred sixty-four thousand, three hundred sixty-two".