3140020 has 36 divisors (see below), whose sum is σ = 7147980. Its totient is φ = 1158144.

The previous prime is 3139993. The next prime is 3140041. The reversal of 3140020 is 200413.

It can be written as a sum of positive squares in 6 ways, for example, as 1567504 + 1572516 = 1252^2 + 1254^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 3139979 and 3140006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2916 + ... + 3844.

It is an arithmetic number, because the mean of its divisors is an integer number (198555).

Almost surely, 2^3140020 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 3140020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3573990).

3140020 is an abundant number, since it is smaller than the sum of its proper divisors (4007960).

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

3140020 is a wasteful number, since it uses less digits than its factorization.

3140020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964 (or 949 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 3140020 is about 1772.0101579844. The cubic root of 3140020 is about 146.4347459508.

Adding to 3140020 its reverse (200413), we get a palindrome (3340433).

The spelling of 3140020 in words is "three million, one hundred forty thousand, twenty".