12552840 has 128 divisors (see below), whose sum is σ = 42768000. Its totient is φ = 3273984.

The previous prime is 12552829. The next prime is 12552877. The reversal of 12552840 is 4825521.

12552840 = T₄₀₁ + T₄₀₂ + ... + T₅₁₈.

It is a happy number.

12552840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 63622 + ... + 63818.

It is an arithmetic number, because the mean of its divisors is an integer number (334125).

Almost surely, 2^12552840 is an apocalyptic number.

12552840 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 12552840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21384000).

12552840 is an abundant number, since it is smaller than the sum of its proper divisors (30215160).

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

12552840 is a wasteful number, since it uses less digits than its factorization.

12552840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276 (or 266 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 12552840 is about 3542.9987298897. The cubic root of 12552840 is about 232.4059973785.

It can be divided in two parts, 1255 and 2840, that added together give a triangular number (4095 = T₉₀).

The spelling of 12552840 in words is "twelve million, five hundred fifty-two thousand, eight hundred forty".