21484941 has 8 divisors (see below), whose sum is σ = 28711104. Its totient is φ = 14291040.

The previous prime is 21484937. The next prime is 21484973. The reversal of 21484941 is 14948412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21484941 - 2² = 21484937 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21484241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6465 + ... + 9206.

It is an arithmetic number, because the mean of its divisors is an integer number (3588888).

Almost surely, 2^21484941 is an apocalyptic number.

It is an amenable number.

21484941 is a deficient number, since it is larger than the sum of its proper divisors (7226163).

21484941 is a wasteful number, since it uses less digits than its factorization.

21484941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16131.

The product of its digits is 9216, while the sum is 33.

The square root of 21484941 is about 4635.1851095722. The cubic root of 21484941 is about 277.9999525559. Note that the first 4 decimals are identical.

The spelling of 21484941 in words is "twenty-one million, four hundred eighty-four thousand, nine hundred forty-one".