21083192 has 32 divisors (see below), whose sum is σ = 43730400. Its totient is φ = 9465984.

The previous prime is 21083191. The next prime is 21083197. The reversal of 21083192 is 29138012.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21083191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1109 + ... + 6587.

It is an arithmetic number, because the mean of its divisors is an integer number (1366575).

Almost surely, 2^21083192 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 21083192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21865200).

21083192 is an abundant number, since it is smaller than the sum of its proper divisors (22647208).

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

21083192 is a wasteful number, since it uses less digits than its factorization.

21083192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5535 (or 5531 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 21083192 is about 4591.6437144012. The cubic root of 21083192 is about 276.2562557363.

The spelling of 21083192 in words is "twenty-one million, eighty-three thousand, one hundred ninety-two".