1226624 has 48 divisors (see below), whose sum is σ = 2870280. Its totient is φ = 511488.

The previous prime is 1226623. The next prime is 1226629. The reversal of 1226624 is 4266221.

It is a self number, because there is not a number n which added to its sum of digits gives 1226624.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33134 + ... + 33170.

2^1226624 is an apocalyptic number.

1226624 is a gapful number since it is divisible by the number (14) 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 1226624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1435140).

1226624 is an abundant number, since it is smaller than the sum of its proper divisors (1643656).

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

1226624 is an frugal number, since it uses more digits than its factorization.

1226624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95 (or 46 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 1226624 is about 1107.5305864851. The cubic root of 1226624 is about 107.0460104335.

The spelling of 1226624 in words is "one million, two hundred twenty-six thousand, six hundred twenty-four".