2187020 has 24 divisors (see below), whose sum is σ = 5010768. Its totient is φ = 795200.

The previous prime is 2187011. The next prime is 2187037. The reversal of 2187020 is 207812.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2186983 and 2187001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4751 + ... + 5190.

It is an arithmetic number, because the mean of its divisors is an integer number (208782).

2^2187020 is an apocalyptic number.

2187020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2187020 is an abundant number, since it is smaller than the sum of its proper divisors (2823748).

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

2187020 is a wasteful number, since it uses less digits than its factorization.

2187020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9961 (or 9959 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 2187020 is about 1478.8576672554. The cubic root of 2187020 is about 129.8028570054.

The spelling of 2187020 in words is "two million, one hundred eighty-seven thousand, twenty".