224210861 has 16 divisors (see below), whose sum is σ = 272250240. Its totient is φ = 180532800.

The previous prime is 224210839. The next prime is 224210867. The reversal of 224210861 is 168012422.

It is a happy number.

It is not a de Polignac number, because 224210861 - 2¹⁸ = 223948717 is a prime.

It is a super-2 number, since 2×224210861² = 100541020380722642, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 224210861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224210867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7415 + ... + 22436.

It is an arithmetic number, because the mean of its divisors is an integer number (17015640).

Almost surely, 2^224210861 is an apocalyptic number.

It is an amenable number.

224210861 is a deficient number, since it is larger than the sum of its proper divisors (48039379).

224210861 is a wasteful number, since it uses less digits than its factorization.

224210861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29924.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 224210861 is about 14973.6722616732. The cubic root of 224210861 is about 607.5082995473.

The spelling of 224210861 in words is "two hundred twenty-four million, two hundred ten thousand, eight hundred sixty-one".