4528720 has 40 divisors (see below), whose sum is σ = 12034944. Its totient is φ = 1552512.

The previous prime is 4528709. The next prime is 4528721. The reversal of 4528720 is 278254.

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

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4528721) 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, 3484 + ... + 4603.

Almost surely, 2^4528720 is an apocalyptic number.

4528720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4528720 is an abundant number, since it is smaller than the sum of its proper divisors (7506224).

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

4528720 is a wasteful number, since it uses less digits than its factorization.

4528720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8107 (or 8101 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 4528720 is about 2128.0789459040. The cubic root of 4528720 is about 165.4468451039.

The spelling of 4528720 in words is "four million, five hundred twenty-eight thousand, seven hundred twenty".