3172340 has 12 divisors (see below), whose sum is σ = 6661956. Its totient is φ = 1268928.

The previous prime is 3172327. The next prime is 3172349. The reversal of 3172340 is 432713.

It can be written as a sum of positive squares in 2 ways, for example, as 1669264 + 1503076 = 1292^2 + 1226^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 158617 = 3172340 / (3 + 1 + 7 + 2 + 3 + 4 + 0).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3172349) 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, 79289 + ... + 79328.

It is an arithmetic number, because the mean of its divisors is an integer number (555163).

Almost surely, 2^3172340 is an apocalyptic number.

It is an amenable number.

3172340 is an abundant number, since it is smaller than the sum of its proper divisors (3489616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3172340 is a wasteful number, since it uses less digits than its factorization.

3172340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158626 (or 158624 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 3172340 is about 1781.1063977202. The cubic root of 3172340 is about 146.9354460723.

The spelling of 3172340 in words is "three million, one hundred seventy-two thousand, three hundred forty".