3138734 has 4 divisors (see below), whose sum is σ = 4708104. Its totient is φ = 1569366.

The previous prime is 3138691. The next prime is 3138767. The reversal of 3138734 is 4378313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4378313 = 541 ⋅8093.

It is a super-2 number, since 2×3138734² = 19703302245512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3138697 and 3138706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 784682 + ... + 784685.

It is an arithmetic number, because the mean of its divisors is an integer number (1177026).

Almost surely, 2^3138734 is an apocalyptic number.

3138734 is a deficient number, since it is larger than the sum of its proper divisors (1569370).

3138734 is a wasteful number, since it uses less digits than its factorization.

3138734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569369.

The product of its digits is 6048, while the sum is 29.

The square root of 3138734 is about 1771.6472560868. The cubic root of 3138734 is about 146.4147523629.

The spelling of 3138734 in words is "three million, one hundred thirty-eight thousand, seven hundred thirty-four".