3128170890 has 128 divisors (see below), whose sum is σ = 8576451072. Its totient is φ = 724331520.

The previous prime is 3128170879. The next prime is 3128170907. The reversal of 3128170890 is 980718213.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 544312 + ... + 550028.

It is an arithmetic number, because the mean of its divisors is an integer number (67003524).

Almost surely, 2^3128170890 is an apocalyptic number.

3128170890 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3128170890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4288225536).

3128170890 is an abundant number, since it is smaller than the sum of its proper divisors (5448280182).

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

3128170890 is a wasteful number, since it uses less digits than its factorization.

3128170890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5824.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 3128170890 is about 55930.0535490536. The cubic root of 3128170890 is about 1462.5031946749.

The spelling of 3128170890 in words is "three billion, one hundred twenty-eight million, one hundred seventy thousand, eight hundred ninety".