3156945 has 48 divisors (see below), whose sum is σ = 5925312. Its totient is φ = 1422720.

The previous prime is 3156941. The next prime is 3156949. The reversal of 3156945 is 5496513.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3156941) and next prime (3156949).

It is not a de Polignac number, because 3156945 - 2² = 3156941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (3156941) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59539 + ... + 59591.

It is an arithmetic number, because the mean of its divisors is an integer number (123444).

Almost surely, 2^3156945 is an apocalyptic number.

It is an amenable number.

3156945 is a deficient number, since it is larger than the sum of its proper divisors (2768367).

3156945 is a wasteful number, since it uses less digits than its factorization.

3156945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 91 counting only the distinct ones).

The product of its digits is 16200, while the sum is 33.

The square root of 3156945 is about 1776.7793897949. The cubic root of 3156945 is about 146.6973736211.

It can be divided in two parts, 315 and 6945, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 3156945 in words is "three million, one hundred fifty-six thousand, nine hundred forty-five".