7897773528 has 96 divisors (see below), whose sum is σ = 22118154240. Its totient is φ = 2543244480.

The previous prime is 7897773523. The next prime is 7897773547. The reversal of 7897773528 is 8253777987.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7897773523) 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, 1432425 + ... + 1437927.

It is an arithmetic number, because the mean of its divisors is an integer number (230397440).

Almost surely, 2^7897773528 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 7897773528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11059077120).

7897773528 is an abundant number, since it is smaller than the sum of its proper divisors (14220380712).

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

7897773528 is a wasteful number, since it uses less digits than its factorization.

7897773528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6189 (or 6182 counting only the distinct ones).

The product of its digits is 41489280, while the sum is 63.

The square root of 7897773528 is about 88869.4184070088. The cubic root of 7897773528 is about 1991.4445819288. Note that the first 3 decimals are identical.

The spelling of 7897773528 in words is "seven billion, eight hundred ninety-seven million, seven hundred seventy-three thousand, five hundred twenty-eight".