3140072 has 32 divisors (see below), whose sum is σ = 6421800. Its totient is φ = 1430784.

The previous prime is 3140069. The next prime is 3140099. The reversal of 3140072 is 2700413.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1943236 + 1196836 = 1394^2 + 1094^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3140072.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11198 + ... + 11474.

Almost surely, 2^3140072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3140072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3210900).

3140072 is an abundant number, since it is smaller than the sum of its proper divisors (3281728).

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

3140072 is a wasteful number, since it uses less digits than its factorization.

3140072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405 (or 401 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 3140072 is about 1772.0248305258. The cubic root of 3140072 is about 146.4355542858.

Adding to 3140072 its reverse (2700413), we get a palindrome (5840485).

The spelling of 3140072 in words is "three million, one hundred forty thousand, seventy-two".