82878455 has 16 divisors (see below), whose sum is σ = 109517184. Its totient is φ = 59707680.

The previous prime is 82878431. The next prime is 82878457. The reversal of 82878455 is 55487828.

It is not a de Polignac number, because 82878455 - 2⁶ = 82878391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82878457) 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, 1157 + ... + 12926.

It is an arithmetic number, because the mean of its divisors is an integer number (6844824).

Almost surely, 2^82878455 is an apocalyptic number.

82878455 is a deficient number, since it is larger than the sum of its proper divisors (26638729).

82878455 is a wasteful number, since it uses less digits than its factorization.

82878455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14206.

The product of its digits is 716800, while the sum is 47.

The square root of 82878455 is about 9103.7604867439. The cubic root of 82878455 is about 435.9940362650.

The spelling of 82878455 in words is "eighty-two million, eight hundred seventy-eight thousand, four hundred fifty-five".