8781445248 has 32 divisors (see below), whose sum is σ = 23325714960. Its totient is φ = 2927148288.

The previous prime is 8781445243. The next prime is 8781445297. The reversal of 8781445248 is 8425441878.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×8781445248² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8781445248.

It is not an unprimeable number, because it can be changed into a prime (8781445243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11433790 + ... + 11434557.

Almost surely, 2^8781445248 is an apocalyptic number.

It is an amenable number.

8781445248 is an abundant number, since it is smaller than the sum of its proper divisors (14544269712).

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

8781445248 is a wasteful number, since it uses less digits than its factorization.

8781445248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22868364 (or 22868352 counting only the distinct ones).

The product of its digits is 2293760, while the sum is 51.

The square root of 8781445248 is about 93709.3658499512. The cubic root of 8781445248 is about 2063.1081718860.

The spelling of 8781445248 in words is "eight billion, seven hundred eighty-one million, four hundred forty-five thousand, two hundred forty-eight".