4352640 has 64 divisors (see below), whose sum is σ = 13880160. Its totient is φ = 1160192.

The previous prime is 4352611. The next prime is 4352641. The reversal of 4352640 is 462534.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 4352640.

It is not an unprimeable number, because it can be changed into a prime (4352641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 787 + ... + 3053.

Almost surely, 2^4352640 is an apocalyptic number.

4352640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4352640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6940080).

4352640 is an abundant number, since it is smaller than the sum of its proper divisors (9527520).

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

4352640 is a wasteful number, since it uses less digits than its factorization.

4352640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2289 (or 2277 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 4352640 is about 2086.2981570236. The cubic root of 4352640 is about 163.2742069297.

The spelling of 4352640 in words is "four million, three hundred fifty-two thousand, six hundred forty".