4278477780 has 96 divisors (see below), whose sum is σ = 13529134080. Its totient is φ = 1122215040.

The previous prime is 4278477767. The next prime is 4278477781. The reversal of 4278477780 is 877748724.

4278477780 is a `hidden beast` number, since 427 + 84 + 77 + 78 + 0 = 666.

It is a super-2 number, since 2×4278477780² = 36610744227907456800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4278477781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32004 + ... + 97883.

It is an arithmetic number, because the mean of its divisors is an integer number (140928480).

Almost surely, 2^4278477780 is an apocalyptic number.

It is an amenable number.

4278477780 is an abundant number, since it is smaller than the sum of its proper divisors (9250656300).

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

4278477780 is a wasteful number, since it uses less digits than its factorization.

4278477780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129966 (or 129958 counting only the distinct ones).

The product of its (nonzero) digits is 4917248, while the sum is 54.

The square root of 4278477780 is about 65410.0739947602. The cubic root of 4278477780 is about 1623.4157694697.

The spelling of 4278477780 in words is "four billion, two hundred seventy-eight million, four hundred seventy-seven thousand, seven hundred eighty".