82921235 has 4 divisors (see below), whose sum is σ = 99505488. Its totient is φ = 66336984.

The previous prime is 82921231. The next prime is 82921253. The reversal of 82921235 is 53212928.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82921235 - 2² = 82921231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82921231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8292119 + ... + 8292128.

It is an arithmetic number, because the mean of its divisors is an integer number (24876372).

Almost surely, 2^82921235 is an apocalyptic number.

82921235 is a deficient number, since it is larger than the sum of its proper divisors (16584253).

82921235 is a wasteful number, since it uses less digits than its factorization.

82921235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16584252.

The product of its digits is 8640, while the sum is 32.

The square root of 82921235 is about 9106.1097621322. The cubic root of 82921235 is about 436.0690401429.

The spelling of 82921235 in words is "eighty-two million, nine hundred twenty-one thousand, two hundred thirty-five".