82978892 has 6 divisors (see below), whose sum is σ = 145213068. Its totient is φ = 41489444.

The previous prime is 82978891. The next prime is 82978913. The reversal of 82978892 is 29887928.

It is not an unprimeable number, because it can be changed into a prime (82978891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10372358 + ... + 10372365.

It is an arithmetic number, because the mean of its divisors is an integer number (24202178).

Almost surely, 2^82978892 is an apocalyptic number.

It is an amenable number.

82978892 is a deficient number, since it is larger than the sum of its proper divisors (62234176).

82978892 is a wasteful number, since it uses less digits than its factorization.

82978892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20744727 (or 20744725 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 53.

The square root of 82978892 is about 9109.2750534826. The cubic root of 82978892 is about 436.1700862643.

The spelling of 82978892 in words is "eighty-two million, nine hundred seventy-eight thousand, eight hundred ninety-two".