2217138 has 32 divisors (see below), whose sum is σ = 5529600. Its totient is φ = 575760.

The previous prime is 2217113. The next prime is 2217143. The reversal of 2217138 is 8317122.

It is a super-2 number, since 2×2217138² = 9831401822088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1938 + ... + 2861.

It is an arithmetic number, because the mean of its divisors is an integer number (172800).

2^2217138 is an apocalyptic number.

2217138 is an abundant number, since it is smaller than the sum of its proper divisors (3312462).

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

2217138 is a wasteful number, since it uses less digits than its factorization.

2217138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4822.

The product of its digits is 672, while the sum is 24.

The square root of 2217138 is about 1489.0057085183. The cubic root of 2217138 is about 130.3959917596.

The spelling of 2217138 in words is "two million, two hundred seventeen thousand, one hundred thirty-eight".