3147140 has 24 divisors (see below), whose sum is σ = 6735960. Its totient is φ = 1234688.

The previous prime is 3147121. The next prime is 3147143. The reversal of 3147140 is 417413.

It can be written as a sum of positive squares in 4 ways, for example, as 21316 + 3125824 = 146^2 + 1768^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (3147143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425 + ... + 2544.

It is an arithmetic number, because the mean of its divisors is an integer number (280665).

Almost surely, 2^3147140 is an apocalyptic number.

It is an amenable number.

3147140 is an abundant number, since it is smaller than the sum of its proper divisors (3588820).

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

3147140 is a wasteful number, since it uses less digits than its factorization.

3147140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3031 (or 3029 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 3147140 is about 1774.0180382397. The cubic root of 3147140 is about 146.5453427345.

The spelling of 3147140 in words is "three million, one hundred forty-seven thousand, one hundred forty".