82774390 has 8 divisors (see below), whose sum is σ = 148993920. Its totient is φ = 33109752.

The previous prime is 82774369. The next prime is 82774397. The reversal of 82774390 is 9347728.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82774397) 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, 4138710 + ... + 4138729.

It is an arithmetic number, because the mean of its divisors is an integer number (18624240).

Almost surely, 2^82774390 is an apocalyptic number.

82774390 is a deficient number, since it is larger than the sum of its proper divisors (66219530).

82774390 is a wasteful number, since it uses less digits than its factorization.

82774390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8277446.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 82774390 is about 9098.0431962043. The cubic root of 82774390 is about 435.8114768663.

The spelling of 82774390 in words is "eighty-two million, seven hundred seventy-four thousand, three hundred ninety".