82757782 has 4 divisors (see below), whose sum is σ = 124136676. Its totient is φ = 41378890.

The previous prime is 82757777. The next prime is 82757783. The reversal of 82757782 is 28775728.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82757783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20689444 + ... + 20689447.

It is an arithmetic number, because the mean of its divisors is an integer number (31034169).

Almost surely, 2^82757782 is an apocalyptic number.

82757782 is a deficient number, since it is larger than the sum of its proper divisors (41378894).

82757782 is a wasteful number, since it uses less digits than its factorization.

82757782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41378893.

The product of its digits is 439040, while the sum is 46.

The square root of 82757782 is about 9097.1304266785. The cubic root of 82757782 is about 435.7823275882.

The spelling of 82757782 in words is "eighty-two million, seven hundred fifty-seven thousand, seven hundred eighty-two".