82719650 has 24 divisors (see below), whose sum is σ = 165695124. Its totient is φ = 30542400.

The previous prime is 82719649. The next prime is 82719653. The reversal of 82719650 is 5691728.

It can be written as a sum of positive squares in 6 ways, for example, as 29997529 + 52722121 = 5477^2 + 7261^2 .

It is a super-2 number, since 2×82719650² = 13685080992245000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82719653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62981 + ... + 64280.

Almost surely, 2^82719650 is an apocalyptic number.

82719650 is an abundant number, since it is smaller than the sum of its proper divisors (82975474).

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

82719650 is a wasteful number, since it uses less digits than its factorization.

82719650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127286 (or 127281 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 82719650 is about 9095.0343594733. The cubic root of 82719650 is about 435.7153860302.

The spelling of 82719650 in words is "eighty-two million, seven hundred nineteen thousand, six hundred fifty".