82780902 has 12 divisors (see below), whose sum is σ = 179358660. Its totient is φ = 27593628.

The previous prime is 82780889. The next prime is 82780903. The reversal of 82780902 is 20908728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82780903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2299452 + ... + 2299487.

It is an arithmetic number, because the mean of its divisors is an integer number (14946555).

Almost surely, 2^82780902 is an apocalyptic number.

82780902 is an abundant number, since it is smaller than the sum of its proper divisors (96577758).

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

82780902 is a wasteful number, since it uses less digits than its factorization.

82780902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4598947 (or 4598944 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 82780902 is about 9098.4010683196. The cubic root of 82780902 is about 435.8229052397.

The spelling of 82780902 in words is "eighty-two million, seven hundred eighty thousand, nine hundred two".