21484626 has 8 divisors (see below), whose sum is σ = 42969264. Its totient is φ = 7161540.

The previous prime is 21484607. The next prime is 21484669. The reversal of 21484626 is 62648412.

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

21484626 is an admirable number.

It is a plaindrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1790380 + ... + 1790391.

It is an arithmetic number, because the mean of its divisors is an integer number (5371158).

Almost surely, 2^21484626 is an apocalyptic number.

21484626 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21484626 is a wasteful number, since it uses less digits than its factorization.

21484626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3580776.

The product of its digits is 18432, while the sum is 33.

The square root of 21484626 is about 4635.1511302222. The cubic root of 21484626 is about 277.9985939235.

The spelling of 21484626 in words is "twenty-one million, four hundred eighty-four thousand, six hundred twenty-six".