12003780 has 24 divisors (see below), whose sum is σ = 33610752. Its totient is φ = 3200992.

The previous prime is 12003743. The next prime is 12003821. The reversal of 12003780 is 8730021.

12003780 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

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, 99972 + ... + 100091.

It is an arithmetic number, because the mean of its divisors is an integer number (1400448).

Almost surely, 2^12003780 is an apocalyptic number.

12003780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12003780 is an abundant number, since it is smaller than the sum of its proper divisors (21606972).

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

12003780 is a wasteful number, since it uses less digits than its factorization.

12003780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200075 (or 200073 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 12003780 is about 3464.6471681832. The cubic root of 12003780 is about 228.9668849861.

The spelling of 12003780 in words is "twelve million, three thousand, seven hundred eighty".