2061820 has 12 divisors (see below), whose sum is σ = 4329864. Its totient is φ = 824720.

The previous prime is 2061793. The next prime is 2061847. The reversal of 2061820 is 281602.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2061793) and next prime (2061847).

It is a super-2 number, since 2×2061820² = 8502203424800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51526 + ... + 51565.

It is an arithmetic number, because the mean of its divisors is an integer number (360822).

2^2061820 is an apocalyptic number.

2061820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2061820 is an abundant number, since it is smaller than the sum of its proper divisors (2268044).

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

2061820 is a wasteful number, since it uses less digits than its factorization.

2061820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103100 (or 103098 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 2061820 is about 1435.9038965056. The cubic root of 2061820 is about 127.2770935422.

The spelling of 2061820 in words is "two million, sixty-one thousand, eight hundred twenty".