21485596 has 12 divisors (see below), whose sum is σ = 41018040. Its totient is φ = 9766160.

The previous prime is 21485591. The next prime is 21485609. The reversal of 21485596 is 69558412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21485591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244111 + ... + 244198.

It is an arithmetic number, because the mean of its divisors is an integer number (3418170).

Almost surely, 2^21485596 is an apocalyptic number.

It is an amenable number.

21485596 is a deficient number, since it is larger than the sum of its proper divisors (19532444).

21485596 is a wasteful number, since it uses less digits than its factorization.

21485596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488324 (or 488322 counting only the distinct ones).

The product of its digits is 86400, while the sum is 40.

The square root of 21485596 is about 4635.2557642486. The cubic root of 21485596 is about 278.0027776063.

It can be divided in two parts, 2148 and 5596, that added together give a square (7744 = 88²).

The spelling of 21485596 in words is "twenty-one million, four hundred eighty-five thousand, five hundred ninety-six".