4781620440 has 48 divisors (see below), whose sum is σ = 15540267600. Its totient is φ = 1275098688.

The previous prime is 4781620429. The next prime is 4781620453. The reversal of 4781620440 is 440261874.

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

It is a junction number, because it is equal to n+sod(n) for n = 4781620395 and 4781620404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6640780 + ... + 6641499.

It is an arithmetic number, because the mean of its divisors is an integer number (323755575).

Almost surely, 2^4781620440 is an apocalyptic number.

4781620440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4781620440 is an abundant number, since it is smaller than the sum of its proper divisors (10758647160).

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

4781620440 is a wasteful number, since it uses less digits than its factorization.

4781620440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13282296 (or 13282289 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 4781620440 is about 69149.2620351078. The cubic root of 4781620440 is about 1684.7095320643.

The spelling of 4781620440 in words is "four billion, seven hundred eighty-one million, six hundred twenty thousand, four hundred forty".