2252649728 has 72 divisors (see below), whose sum is σ = 5409405120. Its totient is φ = 914595840.

The previous prime is 2252649727. The next prime is 2252649767. The reversal of 2252649728 is 8279462522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2252649727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 968 + ... + 67128.

Almost surely, 2^2252649728 is an apocalyptic number.

2252649728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2252649728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2704702560).

2252649728 is an abundant number, since it is smaller than the sum of its proper divisors (3156755392).

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

2252649728 is an equidigital number, since it uses as much as digits as its factorization.

2252649728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66203 (or 66189 counting only the distinct ones).

The product of its digits is 967680, while the sum is 47.

The square root of 2252649728 is about 47462.0872697356. The cubic root of 2252649728 is about 1310.8848843380.

The spelling of 2252649728 in words is "two billion, two hundred fifty-two million, six hundred forty-nine thousand, seven hundred twenty-eight".