2758138 has 4 divisors (see below), whose sum is σ = 4137210. Its totient is φ = 1379068.

The previous prime is 2758121. The next prime is 2758141. The reversal of 2758138 is 8318572.

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., 2331729 + 426409 = 1527^2 + 653^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 689533 + ... + 689536.

2^2758138 is an apocalyptic number.

2758138 is a deficient number, since it is larger than the sum of its proper divisors (1379072).

2758138 is a wasteful number, since it uses less digits than its factorization.

2758138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379071.

The product of its digits is 13440, while the sum is 34.

The square root of 2758138 is about 1660.7642818895. The cubic root of 2758138 is about 140.2400304088.

The spelling of 2758138 in words is "two million, seven hundred fifty-eight thousand, one hundred thirty-eight".