3115420 has 108 divisors (see below), whose sum is σ = 8819496. Its totient is φ = 913920.

The previous prime is 3115417. The next prime is 3115423. The reversal of 3115420 is 245113.

It is an interprime number because it is at equal distance from previous prime (3115417) and next prime (3115423).

It is a junction number, because it is equal to n+sod(n) for n = 3115394 and 3115403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3115423) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 183252 + ... + 183268.

It is an arithmetic number, because the mean of its divisors is an integer number (81662).

Almost surely, 2^3115420 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 3115420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4409748).

3115420 is an abundant number, since it is smaller than the sum of its proper divisors (5704076).

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

3115420 is a wasteful number, since it uses less digits than its factorization.

3115420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68 (or 42 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 3115420 is about 1765.0552399288. The cubic root of 3115420 is about 146.0513361725.

It can be divided in two parts, 31 and 15420, that added together give a palindrome (15451).

The spelling of 3115420 in words is "three million, one hundred fifteen thousand, four hundred twenty".