2840738 has 4 divisors (see below), whose sum is σ = 4261110. Its totient is φ = 1420368.

The previous prime is 2840731. The next prime is 2840741. The reversal of 2840738 is 8370482.

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., 1646089 + 1194649 = 1283^2 + 1093^2 .

It is not an unprimeable number, because it can be changed into a prime (2840731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710183 + ... + 710186.

2^2840738 is an apocalyptic number.

2840738 is a deficient number, since it is larger than the sum of its proper divisors (1420372).

2840738 is a wasteful number, since it uses less digits than its factorization.

2840738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420371.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 2840738 is about 1685.4489016283. The cubic root of 2840738 is about 141.6262405220.

The spelling of 2840738 in words is "two million, eight hundred forty thousand, seven hundred thirty-eight".