4781620 has 12 divisors (see below), whose sum is σ = 10041444. Its totient is φ = 1912640.

The previous prime is 4781611. The next prime is 4781629. The reversal of 4781620 is 261874.

It is an interprime number because it is at equal distance from previous prime (4781611) and next prime (4781629).

It can be written as a sum of positive squares in 2 ways, for example, as 2782224 + 1999396 = 1668^2 + 1414^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4781629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119521 + ... + 119560.

It is an arithmetic number, because the mean of its divisors is an integer number (836787).

Almost surely, 2^4781620 is an apocalyptic number.

It is an amenable number.

4781620 is an abundant number, since it is smaller than the sum of its proper divisors (5259824).

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

4781620 is a wasteful number, since it uses less digits than its factorization.

4781620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239090 (or 239088 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 4781620 is about 2186.6915648989. The cubic root of 4781620 is about 168.4709480389.

The spelling of 4781620 in words is "four million, seven hundred eighty-one thousand, six hundred twenty".