2171028 has 24 divisors (see below), whose sum is σ = 5094432. Its totient is φ = 719584.

The previous prime is 2171021. The next prime is 2171077. The reversal of 2171028 is 8201712.

It is a junction number, because it is equal to n+sod(n) for n = 2170995 and 2171013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2171021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2326 + ... + 3122.

It is an arithmetic number, because the mean of its divisors is an integer number (212268).

2^2171028 is an apocalyptic number.

It is an amenable number.

2171028 is an abundant number, since it is smaller than the sum of its proper divisors (2923404).

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

2171028 is a wasteful number, since it uses less digits than its factorization.

2171028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031 (or 1029 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 2171028 is about 1473.4408708869. The cubic root of 2171028 is about 129.4856997869.

The spelling of 2171028 in words is "two million, one hundred seventy-one thousand, twenty-eight".