2251744428 has 12 divisors (see below), whose sum is σ = 5254070360. Its totient is φ = 750581472.

The previous prime is 2251744337. The next prime is 2251744441. The reversal of 2251744428 is 8244471522.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93822673 + ... + 93822696.

Almost surely, 2^2251744428 is an apocalyptic number.

It is an amenable number.

2251744428 is an abundant number, since it is smaller than the sum of its proper divisors (3002325932).

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

2251744428 is a wasteful number, since it uses less digits than its factorization.

2251744428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187645376 (or 187645374 counting only the distinct ones).

The product of its digits is 143360, while the sum is 39.

The square root of 2251744428 is about 47452.5492255158. The cubic root of 2251744428 is about 1310.7092536746.

The spelling of 2251744428 in words is "two billion, two hundred fifty-one million, seven hundred forty-four thousand, four hundred twenty-eight".