7745442828 has 48 divisors (see below), whose sum is σ = 19460165760. Its totient is φ = 2388753664.

The previous prime is 7745442827. The next prime is 7745442917. The reversal of 7745442828 is 8282445477.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (7745442827) 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, 309726 + ... + 333797.

It is an arithmetic number, because the mean of its divisors is an integer number (405420120).

Almost surely, 2^7745442828 is an apocalyptic number.

It is an amenable number.

7745442828 is an abundant number, since it is smaller than the sum of its proper divisors (11714722932).

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

7745442828 is a wasteful number, since it uses less digits than its factorization.

7745442828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643606 (or 643604 counting only the distinct ones).

The product of its digits is 4014080, while the sum is 51.

The square root of 7745442828 is about 88008.1975045507. The cubic root of 7745442828 is about 1978.5578407687.

The spelling of 7745442828 in words is "seven billion, seven hundred forty-five million, four hundred forty-two thousand, eight hundred twenty-eight".