81622362 has 32 divisors (see below), whose sum is σ = 167549184. Its totient is φ = 26496000.

The previous prime is 81622357. The next prime is 81622369. The reversal of 81622362 is 26322618.

It is not an unprimeable number, because it can be changed into a prime (81622369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67362 + ... + 68562.

It is an arithmetic number, because the mean of its divisors is an integer number (5235912).

Almost surely, 2^81622362 is an apocalyptic number.

81622362 is an abundant number, since it is smaller than the sum of its proper divisors (85926822).

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

81622362 is a wasteful number, since it uses less digits than its factorization.

81622362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494.

The product of its digits is 6912, while the sum is 30.

The square root of 81622362 is about 9034.5095052250. The cubic root of 81622362 is about 433.7801947825.

The spelling of 81622362 in words is "eighty-one million, six hundred twenty-two thousand, three hundred sixty-two".