2090556 has 48 divisors (see below), whose sum is σ = 5840800. Its totient is φ = 642816.

The previous prime is 2090509. The next prime is 2090567. The reversal of 2090556 is 6550902.

2090556 is a `hidden beast` number, since 20 + 90 + 556 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 660 + ... + 2148.

2^2090556 is an apocalyptic number.

2090556 is a gapful number since it is divisible by the number (26) 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 2090556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2920400).

2090556 is an abundant number, since it is smaller than the sum of its proper divisors (3750244).

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

2090556 is a wasteful number, since it uses less digits than its factorization.

2090556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1515 (or 1507 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 2090556 is about 1445.8755133136. The cubic root of 2090556 is about 127.8656630983.

The spelling of 2090556 in words is "two million, ninety thousand, five hundred fifty-six".