82787012 has 24 divisors (see below), whose sum is σ = 180626880. Its totient is φ = 32254560.

The previous prime is 82787011. The next prime is 82787017. The reversal of 82787012 is 21078728.

It is not an unprimeable number, because it can be changed into a prime (82787011) 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, 134087 + ... + 134702.

It is an arithmetic number, because the mean of its divisors is an integer number (7526120).

Almost surely, 2^82787012 is an apocalyptic number.

It is an amenable number.

82787012 is an abundant number, since it is smaller than the sum of its proper divisors (97839868).

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

82787012 is a wasteful number, since it uses less digits than its factorization.

82787012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268811 (or 268809 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 35.

The square root of 82787012 is about 9098.7368354074. The cubic root of 82787012 is about 435.8336275697.

The spelling of 82787012 in words is "eighty-two million, seven hundred eighty-seven thousand, twelve".