2940138 has 20 divisors (see below), whose sum is σ = 6588450. Its totient is φ = 979992.

The previous prime is 2940127. The next prime is 2940163. The reversal of 2940138 is 8310492.

It can be written as a sum of positive squares in only one way, i.e., 2712609 + 227529 = 1647^2 + 477^2 .

It is a super-2 number, since 2×2940138² = 17288822918088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8913 + ... + 9236.

2^2940138 is an apocalyptic number.

2940138 is an abundant number, since it is smaller than the sum of its proper divisors (3648312).

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

2940138 is a wasteful number, since it uses less digits than its factorization.

2940138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18163 (or 18154 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 2940138 is about 1714.6830610932. The cubic root of 2940138 is about 143.2592165337.

The spelling of 2940138 in words is "two million, nine hundred forty thousand, one hundred thirty-eight".