3147240 has 32 divisors (see below), whose sum is σ = 9442080. Its totient is φ = 839232.

The previous prime is 3147239. The next prime is 3147241. The reversal of 3147240 is 427413.

It is an interprime number because it is at equal distance from previous prime (3147239) and next prime (3147241).

It is not an unprimeable number, because it can be changed into a prime (3147241) 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, 12994 + ... + 13233.

It is an arithmetic number, because the mean of its divisors is an integer number (295065).

Almost surely, 2^3147240 is an apocalyptic number.

3147240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3147240 is an abundant number, since it is smaller than the sum of its proper divisors (6294840).

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

3147240 is a wasteful number, since it uses less digits than its factorization.

3147240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26241 (or 26237 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 3147240 is about 1774.0462226222. The cubic root of 3147240 is about 146.5468948717.

The spelling of 3147240 in words is "three million, one hundred forty-seven thousand, two hundred forty".