4787440 has 80 divisors (see below), whose sum is σ = 12999168. Its totient is φ = 1605888.

The previous prime is 4787371. The next prime is 4787441. The reversal of 4787440 is 447874.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 4787396 and 4787405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4787441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46429 + ... + 46531.

Almost surely, 2^4787440 is an apocalyptic number.

4787440 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 4787440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6499584).

4787440 is an abundant number, since it is smaller than the sum of its proper divisors (8211728).

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

4787440 is a wasteful number, since it uses less digits than its factorization.

4787440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 34.

The square root of 4787440 is about 2188.0219377328. The cubic root of 4787440 is about 168.5392723988.

The spelling of 4787440 in words is "four million, seven hundred eighty-seven thousand, four hundred forty".