21250094 has 8 divisors (see below), whose sum is σ = 33552840. Its totient is φ = 10065816.

The previous prime is 21250067. The next prime is 21250111. The reversal of 21250094 is 49005212.

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, 279569 + ... + 279644.

It is an arithmetic number, because the mean of its divisors is an integer number (4194105).

Almost surely, 2^21250094 is an apocalyptic number.

21250094 is a deficient number, since it is larger than the sum of its proper divisors (12302746).

21250094 is a wasteful number, since it uses less digits than its factorization.

21250094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559234.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 21250094 is about 4609.7824243667. The cubic root of 21250094 is about 276.9833212511.

The spelling of 21250094 in words is "twenty-one million, two hundred fifty thousand, ninety-four".