2605769928 has 96 divisors (see below), whose sum is σ = 7599290400. Its totient is φ = 803618304.

The previous prime is 2605769923. The next prime is 2605770017. The reversal of 2605769928 is 8299675062.

2605769928 is a `hidden beast` number, since 2 + 60 + 576 + 9 + 9 + 2 + 8 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2605769923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54175 + ... + 90257.

It is an arithmetic number, because the mean of its divisors is an integer number (79159275).

Almost surely, 2^2605769928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2605769928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3799645200).

2605769928 is an abundant number, since it is smaller than the sum of its proper divisors (4993520472).

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

2605769928 is a wasteful number, since it uses less digits than its factorization.

2605769928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36171 (or 36164 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The square root of 2605769928 is about 51046.7425797181. The cubic root of 2605769928 is about 1376.0853012402.

The spelling of 2605769928 in words is "two billion, six hundred five million, seven hundred sixty-nine thousand, nine hundred twenty-eight".