1212288 has 128 divisors (see below), whose sum is σ = 4112640. Its totient is φ = 307200.

The previous prime is 1212283. The next prime is 1212293. The reversal of 1212288 is 8822121.

It is an interprime number because it is at equal distance from previous prime (1212283) and next prime (1212293).

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

Its product of digits (512) is a multiple of the sum of its prime divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29548 + ... + 29588.

It is an arithmetic number, because the mean of its divisors is an integer number (32130).

2^1212288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2056320).

1212288 is an abundant number, since it is smaller than the sum of its proper divisors (2900352).

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

1212288 is a wasteful number, since it uses less digits than its factorization.

1212288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76 (or 64 counting only the distinct ones).

The product of its digits is 512, while the sum is 24.

The square root of 1212288 is about 1101.0395088279. The cubic root of 1212288 is about 106.6273466185.

It can be divided in two parts, 12 and 12288, that multiplied together give a square (147456 = 384²).

The spelling of 1212288 in words is "one million, two hundred twelve thousand, two hundred eighty-eight".