21485932 has 24 divisors (see below), whose sum is σ = 40903632. Its totient is φ = 9816000.

The previous prime is 21485929. The next prime is 21485957. The reversal of 21485932 is 23958412.

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, 3207 + ... + 7297.

It is an arithmetic number, because the mean of its divisors is an integer number (1704318).

Almost surely, 2^21485932 is an apocalyptic number.

It is an amenable number.

21485932 is a deficient number, since it is larger than the sum of its proper divisors (19417700).

21485932 is a wasteful number, since it uses less digits than its factorization.

21485932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4209 (or 4207 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 21485932 is about 4635.2920080616. The cubic root of 21485932 is about 278.0042267701.

The spelling of 21485932 in words is "twenty-one million, four hundred eighty-five thousand, nine hundred thirty-two".