4720440 has 64 divisors (see below), whose sum is σ = 14313600. Its totient is φ = 1245312.

The previous prime is 4720433. The next prime is 4720477. The reversal of 4720440 is 440274.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16539 + ... + 16821.

It is an arithmetic number, because the mean of its divisors is an integer number (223650).

Almost surely, 2^4720440 is an apocalyptic number.

4720440 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 4720440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7156800).

4720440 is an abundant number, since it is smaller than the sum of its proper divisors (9593160).

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

4720440 is a wasteful number, since it uses less digits than its factorization.

4720440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 4720440 is about 2172.6573590882. The cubic root of 4720440 is about 167.7493427568.

The spelling of 4720440 in words is "four million, seven hundred twenty thousand, four hundred forty".