4861540 has 12 divisors (see below), whose sum is σ = 10209276. Its totient is φ = 1944608.

The previous prime is 4861529. The next prime is 4861547. The reversal of 4861540 is 451684.

It can be written as a sum of positive squares in 2 ways, for example, as 2377764 + 2483776 = 1542^2 + 1576^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4861499 and 4861508.

It is not an unprimeable number, because it can be changed into a prime (4861547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121519 + ... + 121558.

It is an arithmetic number, because the mean of its divisors is an integer number (850773).

Almost surely, 2^4861540 is an apocalyptic number.

It is an amenable number.

4861540 is an abundant number, since it is smaller than the sum of its proper divisors (5347736).

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

4861540 is a wasteful number, since it uses less digits than its factorization.

4861540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243086 (or 243084 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 4861540 is about 2204.8900199330. The cubic root of 4861540 is about 169.4043746114.

The spelling of 4861540 in words is "four million, eight hundred sixty-one thousand, five hundred forty".