21127794 has 8 divisors (see below), whose sum is σ = 42255600. Its totient is φ = 7042596.

The previous prime is 21127783. The next prime is 21127817. The reversal of 21127794 is 49772112.

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

21127794 is an admirable number.

It is a Curzon 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, 1760644 + ... + 1760655.

It is an arithmetic number, because the mean of its divisors is an integer number (5281950).

Almost surely, 2^21127794 is an apocalyptic number.

21127794 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.

21127794 is a wasteful number, since it uses less digits than its factorization.

21127794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3521304.

The product of its digits is 7056, while the sum is 33.

The square root of 21127794 is about 4596.4980147934. The cubic root of 21127794 is about 276.4509274420.

The spelling of 21127794 in words is "twenty-one million, one hundred twenty-seven thousand, seven hundred ninety-four".