3128457730 has 32 divisors (see below), whose sum is σ = 5932800000. Its totient is φ = 1184481792.

The previous prime is 3128457719. The next prime is 3128457763. The reversal of 3128457730 is 377548213.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230719 + ... + 243901.

It is an arithmetic number, because the mean of its divisors is an integer number (185400000).

Almost surely, 2^3128457730 is an apocalyptic number.

3128457730 is a deficient number, since it is larger than the sum of its proper divisors (2804342270).

3128457730 is a wasteful number, since it uses less digits than its factorization.

3128457730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14458.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 3128457730 is about 55932.6177645924. The cubic root of 3128457730 is about 1462.5478950882.

The spelling of 3128457730 in words is "three billion, one hundred twenty-eight million, four hundred fifty-seven thousand, seven hundred thirty".