2385775728 has 80 divisors (see below), whose sum is σ = 7826364160. Its totient is φ = 681649344.

The previous prime is 2385775727. The next prime is 2385775753. The reversal of 2385775728 is 8275775832.

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 (2385775727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 391450 + ... + 397497.

It is an arithmetic number, because the mean of its divisors is an integer number (97829552).

Almost surely, 2^2385775728 is an apocalyptic number.

2385775728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2385775728 is an abundant number, since it is smaller than the sum of its proper divisors (5440588432).

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

2385775728 is a wasteful number, since it uses less digits than its factorization.

2385775728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788971 (or 788959 counting only the distinct ones).

The product of its digits is 6585600, while the sum is 54.

The square root of 2385775728 is about 48844.4032413131. The cubic root of 2385775728 is about 1336.2156027914.

The spelling of 2385775728 in words is "two billion, three hundred eighty-five million, seven hundred seventy-five thousand, seven hundred twenty-eight".