2100988 has 6 divisors (see below), whose sum is σ = 3676736. Its totient is φ = 1050492.

The previous prime is 2100983. The next prime is 2100991. The reversal of 2100988 is 8890012.

It is a super-2 number, since 2×2100988² = 8828301152288, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262620 + ... + 262627.

2^2100988 is an apocalyptic number.

It is an amenable number.

2100988 is a deficient number, since it is larger than the sum of its proper divisors (1575748).

2100988 is a wasteful number, since it uses less digits than its factorization.

2100988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525251 (or 525249 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 2100988 is about 1449.4785269193. The cubic root of 2100988 is about 128.0779960837.

The spelling of 2100988 in words is "two million, one hundred thousand, nine hundred eighty-eight".