82189930 has 8 divisors (see below), whose sum is σ = 147941892. Its totient is φ = 32875968.

The previous prime is 82189927. The next prime is 82189931. The reversal of 82189930 is 3998128.

It can be written as a sum of positive squares in 2 ways, for example, as 82101721 + 88209 = 9061^2 + 297^2 .

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

It is not an unprimeable number, because it can be changed into a prime (82189931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4109487 + ... + 4109506.

Almost surely, 2^82189930 is an apocalyptic number.

82189930 is a deficient number, since it is larger than the sum of its proper divisors (65751962).

82189930 is a wasteful number, since it uses less digits than its factorization.

82189930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8219000.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 82189930 is about 9065.8662024100. The cubic root of 82189930 is about 434.7833156960.

The spelling of 82189930 in words is "eighty-two million, one hundred eighty-nine thousand, nine hundred thirty".