2128572 has 24 divisors (see below), whose sum is σ = 5518800. Its totient is φ = 709488.

The previous prime is 2128561. The next prime is 2128591. The reversal of 2128572 is 2758212.

2128572 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9747 + ... + 9962.

It is an arithmetic number, because the mean of its divisors is an integer number (229950).

2^2128572 is an apocalyptic number.

It is an amenable number.

2128572 is an abundant number, since it is smaller than the sum of its proper divisors (3390228).

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

2128572 is a wasteful number, since it uses less digits than its factorization.

2128572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19722 (or 19714 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 2128572 is about 1458.9626451695. The cubic root of 2128572 is about 128.6360754260.

The spelling of 2128572 in words is "two million, one hundred twenty-eight thousand, five hundred seventy-two".