21441190 has 16 divisors (see below), whose sum is σ = 39249360. Its totient is φ = 8430880.

The previous prime is 21441169. The next prime is 21441191. The reversal of 21441190 is 9114412.

It is a super-2 number, since 2×21441190² = 919449257232200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21441191) 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, 17581 + ... + 18760.

It is an arithmetic number, because the mean of its divisors is an integer number (2453085).

Almost surely, 2^21441190 is an apocalyptic number.

21441190 is a deficient number, since it is larger than the sum of its proper divisors (17808170).

21441190 is a wasteful number, since it uses less digits than its factorization.

21441190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36407.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 21441190 is about 4630.4632597614. The cubic root of 21441190 is about 277.8111219824.

The spelling of 21441190 in words is "twenty-one million, four hundred forty-one thousand, one hundred ninety".