3506138 has 4 divisors (see below), whose sum is σ = 5259210. Its totient is φ = 1753068.

The previous prime is 3506137. The next prime is 3506141. The reversal of 3506138 is 8316053.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8316053 = 19 ⋅437687.

It can be written as a sum of positive squares in only one way, i.e., 3485689 + 20449 = 1867^2 + 143^2 .

It is not an unprimeable number, because it can be changed into a prime (3506137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 876533 + ... + 876536.

Almost surely, 2^3506138 is an apocalyptic number.

3506138 is a deficient number, since it is larger than the sum of its proper divisors (1753072).

3506138 is a wasteful number, since it uses less digits than its factorization.

3506138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753071.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 3506138 is about 1872.4684242999. The cubic root of 3506138 is about 151.9181519182.

The spelling of 3506138 in words is "three million, five hundred six thousand, one hundred thirty-eight".