21456094 has 8 divisors (see below), whose sum is σ = 35110008. Its totient is φ = 9752760.

The previous prime is 21456089. The next prime is 21456103. The reversal of 21456094 is 49065412.

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

It is a congruent number.

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, 487617 + ... + 487660.

It is an arithmetic number, because the mean of its divisors is an integer number (4388751).

Almost surely, 2^21456094 is an apocalyptic number.

21456094 is a deficient number, since it is larger than the sum of its proper divisors (13653914).

21456094 is a wasteful number, since it uses less digits than its factorization.

21456094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975290.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 21456094 is about 4632.0723224060. The cubic root of 21456094 is about 277.8754768987.

The spelling of 21456094 in words is "twenty-one million, four hundred fifty-six thousand, ninety-four".