4809780 has 60 divisors (see below), whose sum is σ = 15093540. Its totient is φ = 1282176.

The previous prime is 4809773. The next prime is 4809781. The reversal of 4809780 is 879084.

It can be written as a sum of positive squares in 2 ways, for example, as 599076 + 4210704 = 774^2 + 2052^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-3 number, since 3×4809780³ (a number of 21 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4809781) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 136 + ... + 3104.

It is an arithmetic number, because the mean of its divisors is an integer number (251559).

Almost surely, 2^4809780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4809780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7546770).

4809780 is an abundant number, since it is smaller than the sum of its proper divisors (10283760).

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

4809780 is a wasteful number, since it uses less digits than its factorization.

4809780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2990 (or 2979 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 4809780 is about 2193.1210636898. The cubic root of 4809780 is about 168.8010216091.

The spelling of 4809780 in words is "four million, eight hundred nine thousand, seven hundred eighty".