12377820 has 96 divisors (see below), whose sum is σ = 42674688. Its totient is φ = 2610432.

The previous prime is 12377791. The next prime is 12377843. The reversal of 12377820 is 2877321.

12377820 is an esthetic number in base 16, because in such base its adjacent digits differ by 1.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4327 + ... + 6593.

It is an arithmetic number, because the mean of its divisors is an integer number (444528).

Almost surely, 2^12377820 is an apocalyptic number.

12377820 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 12377820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21337344).

12377820 is an abundant number, since it is smaller than the sum of its proper divisors (30296868).

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

12377820 is a wasteful number, since it uses less digits than its factorization.

12377820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2299 (or 2297 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 12377820 is about 3518.2126143825. The cubic root of 12377820 is about 231.3208188262.

The spelling of 12377820 in words is "twelve million, three hundred seventy-seven thousand, eight hundred twenty".