11946780 has 72 divisors (see below), whose sum is σ = 37425024. Its totient is φ = 3081600.

The previous prime is 11946773. The next prime is 11946787. The reversal of 11946780 is 8764911.

11946780 is a `hidden beast` number, since 119 + 467 + 80 = 666.

11946780 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 an interprime number because it is at equal distance from previous prime (11946773) and next prime (11946787).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11946787) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4510 + ... + 6650.

It is an arithmetic number, because the mean of its divisors is an integer number (519792).

Almost surely, 2^11946780 is an apocalyptic number.

11946780 is a gapful number since it is divisible by the number (10) 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 11946780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18712512).

11946780 is an abundant number, since it is smaller than the sum of its proper divisors (25478244).

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

11946780 is a wasteful number, since it uses less digits than its factorization.

11946780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2187 (or 2182 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 11946780 is about 3456.4114338429. The cubic root of 11946780 is about 228.6038930822.

The spelling of 11946780 in words is "eleven million, nine hundred forty-six thousand, seven hundred eighty".