2031728 has 20 divisors (see below), whose sum is σ = 4108368. Its totient is φ = 971520.

The previous prime is 2031713. The next prime is 2031749. The reversal of 2031728 is 8271302.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2393 + ... + 3128.

2^2031728 is an apocalyptic number.

It is an amenable number.

2031728 is an abundant number, since it is smaller than the sum of its proper divisors (2076640).

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

2031728 is a wasteful number, since it uses less digits than its factorization.

2031728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5552 (or 5546 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 2031728 is about 1425.3869650028. The cubic root of 2031728 is about 126.6548588562.

The spelling of 2031728 in words is "two million, thirty-one thousand, seven hundred twenty-eight".