82192978 has 8 divisors (see below), whose sum is σ = 140902272. Its totient is φ = 35225556.

The previous prime is 82192973. The next prime is 82193009. The reversal of 82192978 is 87929128.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (82192973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2935450 + ... + 2935477.

It is an arithmetic number, because the mean of its divisors is an integer number (17612784).

Almost surely, 2^82192978 is an apocalyptic number.

82192978 is a deficient number, since it is larger than the sum of its proper divisors (58709294).

82192978 is a wasteful number, since it uses less digits than its factorization.

82192978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5870936.

The product of its digits is 145152, while the sum is 46.

The square root of 82192978 is about 9066.0343039280. The cubic root of 82192978 is about 434.7886902520.

The spelling of 82192978 in words is "eighty-two million, one hundred ninety-two thousand, nine hundred seventy-eight".