82621143 has 24 divisors (see below), whose sum is σ = 130590720. Its totient is φ = 49919760.

The previous prime is 82621081. The next prime is 82621151. The reversal of 82621143 is 34112628.

It is not a de Polignac number, because 82621143 - 2⁸ = 82620887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82621043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36828 + ... + 39006.

It is an arithmetic number, because the mean of its divisors is an integer number (5441280).

Almost surely, 2^82621143 is an apocalyptic number.

82621143 is a deficient number, since it is larger than the sum of its proper divisors (47969577).

82621143 is a wasteful number, since it uses less digits than its factorization.

82621143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2579 (or 2576 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 82621143 is about 9089.6173186774. The cubic root of 82621143 is about 435.5423595713.

The spelling of 82621143 in words is "eighty-two million, six hundred twenty-one thousand, one hundred forty-three".