81652282 has 16 divisors (see below), whose sum is σ = 125215200. Its totient is φ = 39921840.

The previous prime is 81652273. The next prime is 81652321. The reversal of 81652282 is 28225618.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19969 + ... + 23707.

It is an arithmetic number, because the mean of its divisors is an integer number (7825950).

Almost surely, 2^81652282 is an apocalyptic number.

81652282 is a deficient number, since it is larger than the sum of its proper divisors (43562918).

81652282 is a wasteful number, since it uses less digits than its factorization.

81652282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3981.

The product of its digits is 15360, while the sum is 34.

The square root of 81652282 is about 9036.1652264664. The cubic root of 81652282 is about 433.8331913616.

The spelling of 81652282 in words is "eighty-one million, six hundred fifty-two thousand, two hundred eighty-two".