2757290728 has 8 divisors (see below), whose sum is σ = 5169920130. Its totient is φ = 1378645360.

The previous prime is 2757290717. The next prime is 2757290729. The reversal of 2757290728 is 8270927572.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1385477284 + 1371813444 = 37222^2 + 37038^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2757290729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172330663 + ... + 172330678.

Almost surely, 2^2757290728 is an apocalyptic number.

It is an amenable number.

2757290728 is a deficient number, since it is larger than the sum of its proper divisors (2412629402).

2757290728 is a wasteful number, since it uses less digits than its factorization.

2757290728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344661347 (or 344661343 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 49.

The square root of 2757290728 is about 52509.9107597794. The cubic root of 2757290728 is about 1402.2566883350.

The spelling of 2757290728 in words is "two billion, seven hundred fifty-seven million, two hundred ninety thousand, seven hundred twenty-eight".