2528221148 has 12 divisors (see below), whose sum is σ = 4490423112. Its totient is φ = 1245243120.

The previous prime is 2528221141. The next prime is 2528221219. The reversal of 2528221148 is 8411228252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2528221141) 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, 4716563 + ... + 4717098.

It is an arithmetic number, because the mean of its divisors is an integer number (374201926).

Almost surely, 2^2528221148 is an apocalyptic number.

It is an amenable number.

2528221148 is a deficient number, since it is larger than the sum of its proper divisors (1962201964).

2528221148 is a wasteful number, since it uses less digits than its factorization.

2528221148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9433732 (or 9433730 counting only the distinct ones).

The product of its digits is 20480, while the sum is 35.

The square root of 2528221148 is about 50281.4195105906. The cubic root of 2528221148 is about 1362.2966435327.

The spelling of 2528221148 in words is "two billion, five hundred twenty-eight million, two hundred twenty-one thousand, one hundred forty-eight".