2730145 has 8 divisors (see below), whose sum is σ = 3574080. Its totient is φ = 1985520.

The previous prime is 2730121. The next prime is 2730157. The reversal of 2730145 is 5410372.

2730145 = T₂₅₄ + T₂₅₅ + ... + T₃₁₉.

2730145 = 518² + 519² + ... + 527².

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2730145 - 2⁷ = 2730017 is a prime.

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, 24765 + ... + 24874.

It is an arithmetic number, because the mean of its divisors is an integer number (446760).

2^2730145 is an apocalyptic number.

It is an amenable number.

2730145 is a deficient number, since it is larger than the sum of its proper divisors (843935).

2730145 is a wasteful number, since it uses less digits than its factorization.

2730145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49655.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 2730145 is about 1652.3150425993. The cubic root of 2730145 is about 139.7639730525.

The spelling of 2730145 in words is "two million, seven hundred thirty thousand, one hundred forty-five".