4251720 has 64 divisors (see below), whose sum is σ = 13919040. Its totient is φ = 1030400.

The previous prime is 4251703. The next prime is 4251721. The reversal of 4251720 is 271524.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4251721) 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, 291 + ... + 2930.

It is an arithmetic number, because the mean of its divisors is an integer number (217485).

Almost surely, 2^4251720 is an apocalyptic number.

4251720 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 4251720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6959520).

4251720 is an abundant number, since it is smaller than the sum of its proper divisors (9667320).

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

4251720 is a wasteful number, since it uses less digits than its factorization.

4251720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3246 (or 3242 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 4251720 is about 2061.9699318855. The cubic root of 4251720 is about 162.0024386159.

It can be divided in two parts, 425 and 1720, that added together give a triangular number (2145 = T₆₅).

The spelling of 4251720 in words is "four million, two hundred fifty-one thousand, seven hundred twenty".