4547640 has 32 divisors (see below), whose sum is σ = 13643280. Its totient is φ = 1212672.

The previous prime is 4547581. The next prime is 4547657. The reversal of 4547640 is 467454.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 4547598 and 4547607.

It is a congruent number.

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, 18829 + ... + 19068.

Almost surely, 2^4547640 is an apocalyptic number.

4547640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4547640 is an abundant number, since it is smaller than the sum of its proper divisors (9095640).

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

4547640 is a wasteful number, since it uses less digits than its factorization.

4547640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37911 (or 37907 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 4547640 is about 2132.5196364864. The cubic root of 4547640 is about 165.6769252168.

The spelling of 4547640 in words is "four million, five hundred forty-seven thousand, six hundred forty".