2730739 has 8 divisors (see below), whose sum is σ = 2999232. Its totient is φ = 2465640.

The previous prime is 2730713. The next prime is 2730743. The reversal of 2730739 is 9370372.

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

It is a cyclic number.

It is not a de Polignac number, because 2730739 - 2¹³ = 2722547 is a prime.

It is a super-2 number, since 2×2730739² = 14913870972242, which contains 22 as substring.

It is a Duffinian number.

2730739 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2730739.

It is not an unprimeable number, because it can be changed into a prime (2730709) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1032 + ... + 2554.

It is an arithmetic number, because the mean of its divisors is an integer number (374904).

2^2730739 is an apocalyptic number.

2730739 is a deficient number, since it is larger than the sum of its proper divisors (268493).

2730739 is a wasteful number, since it uses less digits than its factorization.

2730739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697.

The product of its (nonzero) digits is 7938, while the sum is 31.

The square root of 2730739 is about 1652.4947806272. The cubic root of 2730739 is about 139.7741085068.

The spelling of 2730739 in words is "two million, seven hundred thirty thousand, seven hundred thirty-nine".