4308400644 has 96 divisors (see below), whose sum is σ = 10810195200. Its totient is φ = 1330728960.

The previous prime is 4308400637. The next prime is 4308400667. The reversal of 4308400644 is 4460048034.

It is a super-2 number, since 2×4308400644² = 37124632218439229472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6517674 + ... + 6518334.

It is an arithmetic number, because the mean of its divisors is an integer number (112606200).

Almost surely, 2^4308400644 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 4308400644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5405097600).

4308400644 is an abundant number, since it is smaller than the sum of its proper divisors (6501794556).

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

4308400644 is a wasteful number, since it uses less digits than its factorization.

4308400644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133 (or 1131 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 33.

The square root of 4308400644 is about 65638.4082988002. The cubic root of 4308400644 is about 1627.1916015182.

Adding to 4308400644 its reverse (4460048034), we get a palindrome (8768448678).

The spelling of 4308400644 in words is "four billion, three hundred eight million, four hundred thousand, six hundred forty-four".