4940640 has 144 divisors (see below), whose sum is σ = 17454528. Its totient is φ = 1271808.

The previous prime is 4940629. The next prime is 4940641. The reversal of 4940640 is 460494.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4940641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67644 + ... + 67716.

It is an arithmetic number, because the mean of its divisors is an integer number (121212).

Almost surely, 2^4940640 is an apocalyptic number.

4940640 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 4940640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8727264).

4940640 is an abundant number, since it is smaller than the sum of its proper divisors (12513888).

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

4940640 is a wasteful number, since it uses less digits than its factorization.

4940640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 4940640 is about 2222.7550472331. The cubic root of 4940640 is about 170.3182044774.

The spelling of 4940640 in words is "four million, nine hundred forty thousand, six hundred forty".