2170988 has 6 divisors (see below), whose sum is σ = 3799236. Its totient is φ = 1085492.

The previous prime is 2170943. The next prime is 2171003. The reversal of 2170988 is 8890712.

It is a happy number.

It is a super-2 number, since 2×2170988² = 9426377792288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271370 + ... + 271377.

It is an arithmetic number, because the mean of its divisors is an integer number (633206).

2^2170988 is an apocalyptic number.

It is an amenable number.

2170988 is a deficient number, since it is larger than the sum of its proper divisors (1628248).

2170988 is a wasteful number, since it uses less digits than its factorization.

2170988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542751 (or 542749 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 2170988 is about 1473.4272971545. The cubic root of 2170988 is about 129.4849045477.

The spelling of 2170988 in words is "two million, one hundred seventy thousand, nine hundred eighty-eight".