4308640 has 48 divisors (see below), whose sum is σ = 11636352. Its totient is φ = 1476864.

The previous prime is 4308637. The next prime is 4308653. The reversal of 4308640 is 468034.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 804 + ... + 3043.

It is an arithmetic number, because the mean of its divisors is an integer number (242424).

Almost surely, 2^4308640 is an apocalyptic number.

4308640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4308640 is an abundant number, since it is smaller than the sum of its proper divisors (7327712).

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

4308640 is a wasteful number, since it uses less digits than its factorization.

4308640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3869 (or 3861 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 4308640 is about 2075.7263788852. The cubic root of 4308640 is about 162.7221734189.

Subtracting from 4308640 its reverse (468034), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 4308640 in words is "four million, three hundred eight thousand, six hundred forty".