82278429 has 16 divisors (see below), whose sum is σ = 115074432. Its totient is φ = 52192448.

The previous prime is 82278403. The next prime is 82278439. The reversal of 82278429 is 92487228.

It is a cyclic number.

It is not a de Polignac number, because 82278429 - 2⁸ = 82278173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82278439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10567 + ... + 16619.

It is an arithmetic number, because the mean of its divisors is an integer number (7192152).

Almost surely, 2^82278429 is an apocalyptic number.

It is an amenable number.

82278429 is a deficient number, since it is larger than the sum of its proper divisors (32796003).

82278429 is a wasteful number, since it uses less digits than its factorization.

82278429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6276.

The product of its digits is 129024, while the sum is 42.

The square root of 82278429 is about 9070.7457797030. The cubic root of 82278429 is about 434.9393124480.

The spelling of 82278429 in words is "eighty-two million, two hundred seventy-eight thousand, four hundred twenty-nine".