2815020 has 96 divisors (see below), whose sum is σ = 9455040. Its totient is φ = 691200.

The previous prime is 2815009. The next prime is 2815049. The reversal of 2815020 is 205182.

2815020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2814984 and 2815002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6820 + ... + 7220.

It is an arithmetic number, because the mean of its divisors is an integer number (98490).

2^2815020 is an apocalyptic number.

2815020 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 2815020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4727520).

2815020 is an abundant number, since it is smaller than the sum of its proper divisors (6640020).

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

2815020 is a wasteful number, since it uses less digits than its factorization.

2815020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 2815020 is about 1677.8021337452. The cubic root of 2815020 is about 141.1975501612.

The spelling of 2815020 in words is "two million, eight hundred fifteen thousand, twenty".