4861840 has 20 divisors (see below), whose sum is σ = 11303964. Its totient is φ = 1944704.

The previous prime is 4861811. The next prime is 4861859. The reversal of 4861840 is 481684.

It can be written as a sum of positive squares in 2 ways, for example, as 3055504 + 1806336 = 1748^2 + 1344^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30307 + ... + 30466.

Almost surely, 2^4861840 is an apocalyptic number.

4861840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4861840 is an abundant number, since it is smaller than the sum of its proper divisors (6442124).

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

4861840 is a wasteful number, since it uses less digits than its factorization.

4861840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60786 (or 60780 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 4861840 is about 2204.9580494876. The cubic root of 4861840 is about 169.4078591223.

The spelling of 4861840 in words is "four million, eight hundred sixty-one thousand, eight hundred forty".