2860020 has 36 divisors (see below), whose sum is σ = 8675940. Its totient is φ = 762624.

The previous prime is 2860019. The next prime is 2860021. The reversal of 2860020 is 200682.

It is an interprime number because it is at equal distance from previous prime (2860019) and next prime (2860021).

It can be written as a sum of positive squares in 2 ways, for example, as 820836 + 2039184 = 906^2 + 1428^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 = 2859975 and 2860002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2860021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7765 + ... + 8124.

2^2860020 is an apocalyptic number.

2860020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2860020 is an abundant number, since it is smaller than the sum of its proper divisors (5815920).

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

2860020 is a wasteful number, since it uses less digits than its factorization.

2860020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15904 (or 15899 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2860020 is about 1691.1593656424. The cubic root of 2860020 is about 141.9459557612.

The spelling of 2860020 in words is "two million, eight hundred sixty thousand, twenty".