21094192 has 40 divisors (see below), whose sum is σ = 47108096. Its totient is φ = 8963136.

The previous prime is 21094163. The next prime is 21094207. The reversal of 21094192 is 29149012.

It is a happy number.

It is a super-2 number, since 2×21094192² = 889929872265728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 21094192.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13483 + ... + 14965.

Almost surely, 2^21094192 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21094192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23554048).

21094192 is an abundant number, since it is smaller than the sum of its proper divisors (26013904).

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

21094192 is a wasteful number, since it uses less digits than its factorization.

21094192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625 (or 1619 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 21094192 is about 4592.8413863316. The cubic root of 21094192 is about 276.3042922713.

The spelling of 21094192 in words is "twenty-one million, ninety-four thousand, one hundred ninety-two".