82779016 has 16 divisors (see below), whose sum is σ = 155494800. Its totient is φ = 41313744.

The previous prime is 82778977. The next prime is 82779023. The reversal of 82779016 is 61097728.

It is a self number, because there is not a number n which added to its sum of digits gives 82779016.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4686 + ... + 13693.

It is an arithmetic number, because the mean of its divisors is an integer number (9718425).

Almost surely, 2^82779016 is an apocalyptic number.

It is an amenable number.

82779016 is a deficient number, since it is larger than the sum of its proper divisors (72715784).

82779016 is a wasteful number, since it uses less digits than its factorization.

82779016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18948 (or 18944 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 82779016 is about 9098.2974231446. The cubic root of 82779016 is about 435.8195954254.

The spelling of 82779016 in words is "eighty-two million, seven hundred seventy-nine thousand, sixteen".