4312720 has 80 divisors (see below), whose sum is σ = 10856448. Its totient is φ = 1589760.

The previous prime is 4312703. The next prime is 4312727. The reversal of 4312720 is 272134.

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

It is not an unprimeable number, because it can be changed into a prime (4312727) 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, 91737 + ... + 91783.

Almost surely, 2^4312720 is an apocalyptic number.

4312720 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 4312720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5428224).

4312720 is an abundant number, since it is smaller than the sum of its proper divisors (6543728).

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

4312720 is a wasteful number, since it uses less digits than its factorization.

4312720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 4312720 is about 2076.7089348293. The cubic root of 4312720 is about 162.7735196302.

Adding to 4312720 its reverse (272134), we get a palindrome (4584854).

The spelling of 4312720 in words is "four million, three hundred twelve thousand, seven hundred twenty".