2015020 has 48 divisors (see below), whose sum is σ = 4979520. Its totient is φ = 670464.

The previous prime is 2015011. The next prime is 2015021. The reversal of 2015020 is 205102.

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 = 2014988 and 2015006.

It is not an unprimeable number, because it can be changed into a prime (2015021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4986 + ... + 5374.

It is an arithmetic number, because the mean of its divisors is an integer number (103740).

2^2015020 is an apocalyptic number.

2015020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2015020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2489760).

2015020 is an abundant number, since it is smaller than the sum of its proper divisors (2964500).

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

2015020 is a wasteful number, since it uses less digits than its factorization.

2015020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 2015020 is about 1419.5140013399. The cubic root of 2015020 is about 126.3067189515.

The spelling of 2015020 in words is "two million, fifteen thousand, twenty".