2147738 has 4 divisors (see below), whose sum is σ = 3221610. Its totient is φ = 1073868.

The previous prime is 2147737. The next prime is 2147753. The reversal of 2147738 is 8377412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2053489 + 94249 = 1433^2 + 307^2 .

It is a super-2 number, since 2×2147738² = 9225557033288, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2147731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536933 + ... + 536936.

2^2147738 is an apocalyptic number.

2147738 is a deficient number, since it is larger than the sum of its proper divisors (1073872).

2147738 is a wasteful number, since it uses less digits than its factorization.

2147738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073871.

The product of its digits is 9408, while the sum is 32.

The square root of 2147738 is about 1465.5162912776. The cubic root of 2147738 is about 129.0210089373.

The spelling of 2147738 in words is "two million, one hundred forty-seven thousand, seven hundred thirty-eight".