28240220652 has 48 divisors (see below), whose sum is σ = 75342715392. Its totient is φ = 8064835200.

The previous prime is 28240220651. The next prime is 28240220683. The reversal of 28240220652 is 25602204282.

It is not an unprimeable number, because it can be changed into a prime (28240220651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102777 + ... + 258927.

It is an arithmetic number, because the mean of its divisors is an integer number (1569639904).

Almost surely, 2^28240220652 is an apocalyptic number.

It is an amenable number.

28240220652 is an abundant number, since it is smaller than the sum of its proper divisors (47102494740).

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

28240220652 is a wasteful number, since it uses less digits than its factorization.

28240220652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158318 (or 158316 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

The spelling of 28240220652 in words is "twenty-eight billion, two hundred forty million, two hundred twenty thousand, six hundred fifty-two".