21484926 has 20 divisors (see below), whose sum is σ = 48142512. Its totient is φ = 7161588.

The previous prime is 21484913. The next prime is 21484933. The reversal of 21484926 is 62948412.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 66150 + ... + 66473.

Almost surely, 2^21484926 is an apocalyptic number.

21484926 is an abundant number, since it is smaller than the sum of its proper divisors (26657586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21484926 is a wasteful number, since it uses less digits than its factorization.

21484926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132637 (or 132628 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 21484926 is about 4635.1834915136. The cubic root of 21484926 is about 277.9998878595. Note that the first 3 decimals are identical.

The spelling of 21484926 in words is "twenty-one million, four hundred eighty-four thousand, nine hundred twenty-six".