3128900390 has 96 divisors (see below), whose sum is σ = 7269004800. Its totient is φ = 958614720.

The previous prime is 3128900387. The next prime is 3128900399. The reversal of 3128900390 is 930098213.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3128900390.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3128900399) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 313091 + ... + 322929.

It is an arithmetic number, because the mean of its divisors is an integer number (75718800).

Almost surely, 2^3128900390 is an apocalyptic number.

3128900390 is an abundant number, since it is smaller than the sum of its proper divisors (4140104410).

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

3128900390 is a wasteful number, since it uses less digits than its factorization.

3128900390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9930 (or 9923 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 3128900390 is about 55936.5747074309. The cubic root of 3128900390 is about 1462.6168727309.

The spelling of 3128900390 in words is "three billion, one hundred twenty-eight million, nine hundred thousand, three hundred ninety".