21594082 has 16 divisors (see below), whose sum is σ = 33035904. Its totient is φ = 10584000.

The previous prime is 21594071. The next prime is 21594091. The reversal of 21594082 is 28049512.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33907 + ... + 34537.

It is an arithmetic number, because the mean of its divisors is an integer number (2064744).

Almost surely, 2^21594082 is an apocalyptic number.

21594082 is a deficient number, since it is larger than the sum of its proper divisors (11441822).

21594082 is a wasteful number, since it uses less digits than its factorization.

21594082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 21594082 is about 4646.9432964046. The cubic root of 21594082 is about 278.4698935059.

It can be divided in two parts, 2159 and 4082, that added together give a square (6241 = 79²).

The spelling of 21594082 in words is "twenty-one million, five hundred ninety-four thousand, eighty-two".