82978310 has 8 divisors (see below), whose sum is σ = 149360976. Its totient is φ = 33191320.

The previous prime is 82978307. The next prime is 82978331. The reversal of 82978310 is 1387928.

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

It is a super-2 number, since 2×82978310² = 13770799860912200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 4148906 + ... + 4148925.

It is an arithmetic number, because the mean of its divisors is an integer number (18670122).

Almost surely, 2^82978310 is an apocalyptic number.

82978310 is a deficient number, since it is larger than the sum of its proper divisors (66382666).

82978310 is a wasteful number, since it uses less digits than its factorization.

82978310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8297838.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 82978310 is about 9109.2431079646. The cubic root of 82978310 is about 436.1690665207.

The spelling of 82978310 in words is "eighty-two million, nine hundred seventy-eight thousand, three hundred ten".