378772728 has 32 divisors (see below), whose sum is σ = 947797200. Its totient is φ = 126142208.

The previous prime is 378772721. The next prime is 378772739. The reversal of 378772728 is 827277873.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378772721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22018 + ... + 35246.

Almost surely, 2^378772728 is an apocalyptic number.

It is an amenable number.

378772728 is an abundant number, since it is smaller than the sum of its proper divisors (569024472).

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

378772728 is a wasteful number, since it uses less digits than its factorization.

378772728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14431 (or 14427 counting only the distinct ones).

The product of its digits is 1843968, while the sum is 51.

The square root of 378772728 is about 19462.0843693578. The cubic root of 378772728 is about 723.5350381913.

The spelling of 378772728 in words is "three hundred seventy-eight million, seven hundred seventy-two thousand, seven hundred twenty-eight".