2281387528 has 16 divisors (see below), whose sum is σ = 4888687680. Its totient is φ = 977737488.

The previous prime is 2281387483. The next prime is 2281387529. The reversal of 2281387528 is 8257831822.

2281387528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2281387529) 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, 20369476 + ... + 20369587.

It is an arithmetic number, because the mean of its divisors is an integer number (305542980).

Almost surely, 2^2281387528 is an apocalyptic number.

2281387528 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2281387528 is an abundant number, since it is smaller than the sum of its proper divisors (2607300152).

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

2281387528 is a wasteful number, since it uses less digits than its factorization.

2281387528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40739076 (or 40739072 counting only the distinct ones).

The product of its digits is 430080, while the sum is 46.

The square root of 2281387528 is about 47763.8726235635. The cubic root of 2281387528 is about 1316.4358103043.

The spelling of 2281387528 in words is "two billion, two hundred eighty-one million, three hundred eighty-seven thousand, five hundred twenty-eight".