12001380 has 24 divisors (see below), whose sum is σ = 33604032. Its totient is φ = 3200352.

The previous prime is 12001361. The next prime is 12001387. The reversal of 12001380 is 8310021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (12001387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99952 + ... + 100071.

It is an arithmetic number, because the mean of its divisors is an integer number (1400168).

Almost surely, 2^12001380 is an apocalyptic number.

12001380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12001380 is an abundant number, since it is smaller than the sum of its proper divisors (21602652).

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

12001380 is a wasteful number, since it uses less digits than its factorization.

12001380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200035 (or 200033 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 12001380 is about 3464.3007952544. The cubic root of 12001380 is about 228.9516243168.

The spelling of 12001380 in words is "twelve million, one thousand, three hundred eighty".