2115420 has 24 divisors (see below), whose sum is σ = 5923344. Its totient is φ = 564096.

The previous prime is 2115397. The next prime is 2115427. The reversal of 2115420 is 245112.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2115420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115427) 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, 17569 + ... + 17688.

It is an arithmetic number, because the mean of its divisors is an integer number (246806).

2^2115420 is an apocalyptic number.

2115420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2115420 is an abundant number, since it is smaller than the sum of its proper divisors (3807924).

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

2115420 is a wasteful number, since it uses less digits than its factorization.

2115420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35269 (or 35267 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 2115420 is about 1454.4483490313. The cubic root of 2115420 is about 128.3705894344.

The spelling of 2115420 in words is "two million, one hundred fifteen thousand, four hundred twenty".