21270094 has 8 divisors (see below), whose sum is σ = 33781968. Its totient is φ = 10009440.

The previous prime is 21270089. The next prime is 21270113. The reversal of 21270094 is 49007212.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312762 + ... + 312829.

It is an arithmetic number, because the mean of its divisors is an integer number (4222746).

Almost surely, 2^21270094 is an apocalyptic number.

21270094 is a deficient number, since it is larger than the sum of its proper divisors (12511874).

21270094 is a wasteful number, since it uses less digits than its factorization.

21270094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625610.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 21270094 is about 4611.9512139657. The cubic root of 21270094 is about 277.0701903478.

The spelling of 21270094 in words is "twenty-one million, two hundred seventy thousand, ninety-four".