4631908420 has 72 divisors (see below), whose sum is σ = 10167308424. Its totient is φ = 1772316672.

The previous prime is 4631908403. The next prime is 4631908469. The reversal of 4631908420 is 248091364.

It can be written as a sum of positive squares in 12 ways, for example, as 1043419204 + 3588489216 = 32302^2 + 59904^2 .

It is a super-2 number, since 2×4631908420² = 42909151222533792800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4631908420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1899442 + ... + 1901878.

It is an arithmetic number, because the mean of its divisors is an integer number (141212617).

Almost surely, 2^4631908420 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 4631908420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5083654212).

4631908420 is an abundant number, since it is smaller than the sum of its proper divisors (5535400004).

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

4631908420 is a wasteful number, since it uses less digits than its factorization.

4631908420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2617 (or 2586 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 4631908420 is about 68058.1253047717. The cubic root of 4631908420 is about 1666.9400766568.

Adding to 4631908420 its reverse (248091364), we get a palindrome (4879999784).

The spelling of 4631908420 in words is "four billion, six hundred thirty-one million, nine hundred eight thousand, four hundred twenty".