82120924 has 12 divisors (see below), whose sum is σ = 148667400. Its totient is φ = 39644528.

The previous prime is 82120847. The next prime is 82120939. The reversal of 82120924 is 42902128.

It is a super-2 number, since 2×82120924² = 13487692317227552, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 82120892 and 82120901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353854 + ... + 354085.

It is an arithmetic number, because the mean of its divisors is an integer number (12388950).

Almost surely, 2^82120924 is an apocalyptic number.

It is an amenable number.

82120924 is a deficient number, since it is larger than the sum of its proper divisors (66546476).

82120924 is a wasteful number, since it uses less digits than its factorization.

82120924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707972 (or 707970 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 82120924 is about 9062.0595892987. The cubic root of 82120924 is about 434.6616014419.

Subtracting from 82120924 its reverse (42902128), we obtain a triangular number (39218796 = T₈₈₅₆).

The spelling of 82120924 in words is "eighty-two million, one hundred twenty thousand, nine hundred twenty-four".