2003780688 has 160 divisors (see below), whose sum is σ = 6448920576. Its totient is φ = 522008064.

The previous prime is 2003780663. The next prime is 2003780689. The reversal of 2003780688 is 8860873002.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003780689) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 359781 + ... + 365307.

Almost surely, 2^2003780688 is an apocalyptic number.

2003780688 is a gapful number since it is divisible by the number (28) 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 2003780688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3224460288).

2003780688 is an abundant number, since it is smaller than the sum of its proper divisors (4445139888).

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

2003780688 is a wasteful number, since it uses less digits than its factorization.

2003780688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5641 (or 5635 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 2003780688 is about 44763.6089697871. The cubic root of 2003780688 is about 1260.7144449072.

The spelling of 2003780688 in words is "two billion, three million, seven hundred eighty thousand, six hundred eighty-eight".