2147872 has 12 divisors (see below), whose sum is σ = 4228686. Its totient is φ = 1073920.

The previous prime is 2147869. The next prime is 2147881. The reversal of 2147872 is 2787412.

It can be written as a sum of positive squares in only one way, i.e., 1838736 + 309136 = 1356^2 + 556^2 .

It is a super-2 number, since 2×2147872² = 9226708256768, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33529 + ... + 33592.

2^2147872 is an apocalyptic number.

It is an amenable number.

2147872 is a deficient number, since it is larger than the sum of its proper divisors (2080814).

2147872 is an equidigital number, since it uses as much as digits as its factorization.

2147872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67131 (or 67123 counting only the distinct ones).

The product of its digits is 6272, while the sum is 31.

The square root of 2147872 is about 1465.5620082412. The cubic root of 2147872 is about 129.0236921410.

The spelling of 2147872 in words is "two million, one hundred forty-seven thousand, eight hundred seventy-two".