2906138 has 8 divisors (see below), whose sum is σ = 4369140. Its totient is φ = 1449760.

The previous prime is 2906131. The next prime is 2906143. The reversal of 2906138 is 8316092.

It can be written as a sum of positive squares in 2 ways, for example, as 2900209 + 5929 = 1703^2 + 77^2 .

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2906138.

It is not an unprimeable number, because it can be changed into a prime (2906131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353 + ... + 2436.

2^2906138 is an apocalyptic number.

2906138 is a deficient number, since it is larger than the sum of its proper divisors (1463002).

2906138 is a wasteful number, since it uses less digits than its factorization.

2906138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3312.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 2906138 is about 1704.7398628530. The cubic root of 2906138 is about 142.7048536184.

The spelling of 2906138 in words is "two million, nine hundred six thousand, one hundred thirty-eight".