82569012 has 24 divisors (see below), whose sum is σ = 193384800. Its totient is φ = 27419616.

The previous prime is 82569001. The next prime is 82569013. The reversal of 82569012 is 21096528.

It is a super-2 number, since 2×82569012² = 13635283485312288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82569013) 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, 9562 + ... + 16017.

It is an arithmetic number, because the mean of its divisors is an integer number (8057700).

Almost surely, 2^82569012 is an apocalyptic number.

It is an amenable number.

82569012 is an abundant number, since it is smaller than the sum of its proper divisors (110815788).

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

82569012 is a wasteful number, since it uses less digits than its factorization.

82569012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25855 (or 25853 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 82569012 is about 9086.7492537210. The cubic root of 82569012 is about 435.4507363902.

The spelling of 82569012 in words is "eighty-two million, five hundred sixty-nine thousand, twelve".