224642407 has 4 divisors (see below), whose sum is σ = 245064456. Its totient is φ = 204220360.

The previous prime is 224642387. The next prime is 224642413. The reversal of 224642407 is 704246422.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-224642407 is a prime.

It is a super-2 number, since 2×224642407² = 100928422045507298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224642417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10211008 + ... + 10211029.

It is an arithmetic number, because the mean of its divisors is an integer number (61266114).

Almost surely, 2^224642407 is an apocalyptic number.

224642407 is a deficient number, since it is larger than the sum of its proper divisors (20422049).

224642407 is a wasteful number, since it uses less digits than its factorization.

224642407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20422048.

The product of its (nonzero) digits is 21504, while the sum is 31.

The square root of 224642407 is about 14988.0754935382. The cubic root of 224642407 is about 607.8978134691.

Adding to 224642407 its reverse (704246422), we get a palindrome (928888829).

The spelling of 224642407 in words is "two hundred twenty-four million, six hundred forty-two thousand, four hundred seven".