4782640 has 40 divisors (see below), whose sum is σ = 11213568. Its totient is φ = 1896960.

The previous prime is 4782637. The next prime is 4782641. The reversal of 4782640 is 462874.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (4782641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15124 + ... + 15436.

Almost surely, 2^4782640 is an apocalyptic number.

4782640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4782640 is an abundant number, since it is smaller than the sum of its proper divisors (6430928).

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

4782640 is a wasteful number, since it uses less digits than its factorization.

4782640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517 (or 511 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 4782640 is about 2186.9247815140. The cubic root of 4782640 is about 168.4829264165.

The spelling of 4782640 in words is "four million, seven hundred eighty-two thousand, six hundred forty".