2730138 has 16 divisors (see below), whose sum is σ = 5486880. Its totient is φ = 905616.

The previous prime is 2730121. The next prime is 2730157. The reversal of 2730138 is 8310372.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381 + ... + 2367.

It is an arithmetic number, because the mean of its divisors is an integer number (342930).

2^2730138 is an apocalyptic number.

2730138 is an abundant number, since it is smaller than the sum of its proper divisors (2756742).

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

2730138 is a wasteful number, since it uses less digits than its factorization.

2730138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 2730138 is about 1652.3129243579. The cubic root of 2730138 is about 139.7638536023.

The spelling of 2730138 in words is "two million, seven hundred thirty thousand, one hundred thirty-eight".