2856172746 has 64 divisors (see below), whose sum is σ = 6860924928. Its totient is φ = 775510848.

The previous prime is 2856172741. The next prime is 2856172757. The reversal of 2856172746 is 6472716582.

It is a junction number, because it is equal to n+sod(n) for n = 2856172695 and 2856172704.

It is not an unprimeable number, because it can be changed into a prime (2856172741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45451 + ... + 88193.

It is an arithmetic number, because the mean of its divisors is an integer number (107201952).

Almost surely, 2^2856172746 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2856172746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3430462464).

2856172746 is an abundant number, since it is smaller than the sum of its proper divisors (4004752182).

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

2856172746 is a wasteful number, since it uses less digits than its factorization.

2856172746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42835.

The product of its digits is 1128960, while the sum is 48.

The square root of 2856172746 is about 53443.1730532535. The cubic root of 2856172746 is about 1418.8227937680.

The spelling of 2856172746 in words is "two billion, eight hundred fifty-six million, one hundred seventy-two thousand, seven hundred forty-six".