12253780 has 96 divisors (see below), whose sum is σ = 32820480. Its totient is φ = 3732480.

The previous prime is 12253777. The next prime is 12253783. The reversal of 12253780 is 8735221.

12253780 = 440² + 441² + ... + 495².

It is an interprime number because it is at equal distance from previous prime (12253777) and next prime (12253783).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12253783) 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, 112366 + ... + 112474.

It is an arithmetic number, because the mean of its divisors is an integer number (341880).

Almost surely, 2^12253780 is an apocalyptic number.

12253780 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 12253780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16410240).

12253780 is an abundant number, since it is smaller than the sum of its proper divisors (20566700).

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

12253780 is a wasteful number, since it uses less digits than its factorization.

12253780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 12253780 is about 3500.5399583493. The cubic root of 12253780 is about 230.5455229797.

It can be divided in two parts, 1225 and 3780, that added together give a palindrome (5005).

The spelling of 12253780 in words is "twelve million, two hundred fifty-three thousand, seven hundred eighty".