21484064 has 24 divisors (see below), whose sum is σ = 48339648. Its totient is φ = 9207360.

The previous prime is 21484063. The next prime is 21484069. The reversal of 21484064 is 46048412.

It is not an unprimeable number, because it can be changed into a prime (21484061) 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, 47732 + ... + 48179.

It is an arithmetic number, because the mean of its divisors is an integer number (2014152).

Almost surely, 2^21484064 is an apocalyptic number.

It is an amenable number.

21484064 is an abundant number, since it is smaller than the sum of its proper divisors (26855584).

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

21484064 is an equidigital number, since it uses as much as digits as its factorization.

21484064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95928 (or 95920 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 21484064 is about 4635.0905061282. The cubic root of 21484064 is about 277.9961699177.

The spelling of 21484064 in words is "twenty-one million, four hundred eighty-four thousand, sixty-four".