82920189 has 16 divisors (see below), whose sum is σ = 122266944. Its totient is φ = 49564800.

The previous prime is 82920181. The next prime is 82920197. The reversal of 82920189 is 98102928.

It is an interprime number because it is at equal distance from previous prime (82920181) and next prime (82920197).

It is not a de Polignac number, because 82920189 - 2³ = 82920181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82920181) 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, 14802 + ... + 19619.

It is an arithmetic number, because the mean of its divisors is an integer number (7641684).

Almost surely, 2^82920189 is an apocalyptic number.

It is an amenable number.

82920189 is a deficient number, since it is larger than the sum of its proper divisors (39346755).

82920189 is a wasteful number, since it uses less digits than its factorization.

82920189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34508.

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 82920189 is about 9106.0523279849. The cubic root of 82920189 is about 436.0672065550.

The spelling of 82920189 in words is "eighty-two million, nine hundred twenty thousand, one hundred eighty-nine".