82427772 has 24 divisors (see below), whose sum is σ = 219807616. Its totient is φ = 23550768.

The previous prime is 82427759. The next prime is 82427777. The reversal of 82427772 is 27772428.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 82427772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82427777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490558 + ... + 490725.

Almost surely, 2^82427772 is an apocalyptic number.

It is an amenable number.

82427772 is an abundant number, since it is smaller than the sum of its proper divisors (137379844).

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

82427772 is a wasteful number, since it uses less digits than its factorization.

82427772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981297 (or 981295 counting only the distinct ones).

The product of its digits is 87808, while the sum is 39.

The square root of 82427772 is about 9078.9741711275. The cubic root of 82427772 is about 435.2023051596.

The spelling of 82427772 in words is "eighty-two million, four hundred twenty-seven thousand, seven hundred seventy-two".