4543640 has 16 divisors (see below), whose sum is σ = 10223280. Its totient is φ = 1817440.

The previous prime is 4543619. The next prime is 4543657. The reversal of 4543640 is 463454.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56756 + ... + 56835.

It is an arithmetic number, because the mean of its divisors is an integer number (638955).

Almost surely, 2^4543640 is an apocalyptic number.

4543640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4543640 is an abundant number, since it is smaller than the sum of its proper divisors (5679640).

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

4543640 is a wasteful number, since it uses less digits than its factorization.

4543640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113602 (or 113598 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 4543640 is about 2131.5815724480. The cubic root of 4543640 is about 165.6283357581.

The spelling of 4543640 in words is "four million, five hundred forty-three thousand, six hundred forty".