82377878 has 8 divisors (see below), whose sum is σ = 134800200. Its totient is φ = 37444480.

The previous prime is 82377871. The next prime is 82377959. The reversal of 82377878 is 87877328.

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

It is a super-2 number, since 2×82377878² = 13572229567565768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82377871) 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, 1872203 + ... + 1872246.

It is an arithmetic number, because the mean of its divisors is an integer number (16850025).

Almost surely, 2^82377878 is an apocalyptic number.

82377878 is a deficient number, since it is larger than the sum of its proper divisors (52422322).

82377878 is a wasteful number, since it uses less digits than its factorization.

82377878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3744462.

The product of its digits is 1053696, while the sum is 50.

The square root of 82377878 is about 9076.2259777950. The cubic root of 82377878 is about 435.1144772914.

The spelling of 82377878 in words is "eighty-two million, three hundred seventy-seven thousand, eight hundred seventy-eight".