4220628631 has 8 divisors (see below), whose sum is σ = 4485902720. Its totient is φ = 3959668152.

The previous prime is 4220628563. The next prime is 4220628647. The reversal of 4220628631 is 1368260224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4220628631 - 2⁹ = 4220628119 is a prime.

It is a super-2 number, since 2×4220628631² = 35627412081633868322, 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 (4220628431) 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, 1076385 + ... + 1080298.

It is an arithmetic number, because the mean of its divisors is an integer number (560737840).

Almost surely, 2^4220628631 is an apocalyptic number.

4220628631 is a deficient number, since it is larger than the sum of its proper divisors (265274089).

4220628631 is a wasteful number, since it uses less digits than its factorization.

4220628631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156805.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 4220628631 is about 64966.3653824038. The cubic root of 4220628631 is about 1616.0658271340.

Adding to 4220628631 its reverse (1368260224), we get a palindrome (5588888855).

The spelling of 4220628631 in words is "four billion, two hundred twenty million, six hundred twenty-eight thousand, six hundred thirty-one".