3720278464 has 28 divisors (see below), whose sum is σ = 8437061104. Its totient is φ = 1594404864.

The previous prime is 3720278447. The next prime is 3720278477. The reversal of 3720278464 is 4648720273.

It is a tau number, because it is divible by the number of its divisors (28).

It is a self number, because there is not a number n which added to its sum of digits gives 3720278464.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4151649 + ... + 4152544.

Almost surely, 2^3720278464 is an apocalyptic number.

It is an amenable number.

3720278464 is an abundant number, since it is smaller than the sum of its proper divisors (4716782640).

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

3720278464 is an equidigital number, since it uses as much as digits as its factorization.

3720278464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8304212 (or 8304202 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 43.

The square root of 3720278464 is about 60994.0854837582. The cubic root of 3720278464 is about 1549.5008401704.

The spelling of 3720278464 in words is "three billion, seven hundred twenty million, two hundred seventy-eight thousand, four hundred sixty-four".