7748280252 has 72 divisors (see below), whose sum is σ = 20077913856. Its totient is φ = 2518102944.

The previous prime is 7748280229. The next prime is 7748280259. The reversal of 7748280252 is 2520828477.

7748280252 is a `hidden beast` number, since 77 + 482 + 80 + 25 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 7748280198 and 7748280207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7748280259) 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, 904413 + ... + 912939.

Almost surely, 2^7748280252 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 7748280252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10038956928).

7748280252 is an abundant number, since it is smaller than the sum of its proper divisors (12329633604).

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

7748280252 is a wasteful number, since it uses less digits than its factorization.

7748280252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9167 (or 9162 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 45.

The square root of 7748280252 is about 88024.3162540897. The cubic root of 7748280252 is about 1978.7994160293.

The spelling of 7748280252 in words is "seven billion, seven hundred forty-eight million, two hundred eighty thousand, two hundred fifty-two".