2001773620 has 48 divisors (see below), whose sum is σ = 5241011328. Its totient is φ = 623928960.

The previous prime is 2001773591. The next prime is 2001773623. The reversal of 2001773620 is 263771002.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001773623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 648387 + ... + 651466.

It is an arithmetic number, because the mean of its divisors is an integer number (109187736).

Almost surely, 2^2001773620 is an apocalyptic number.

2001773620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001773620 is an abundant number, since it is smaller than the sum of its proper divisors (3239237708).

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

2001773620 is a wasteful number, since it uses less digits than its factorization.

2001773620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299880 (or 1299878 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 2001773620 is about 44741.1848300869. The cubic root of 2001773620 is about 1260.2933767176.

The spelling of 2001773620 in words is "two billion, one million, seven hundred seventy-three thousand, six hundred twenty".