1218924 has 54 divisors (see below), whose sum is σ = 3589404. Its totient is φ = 347760.

The previous prime is 1218923. The next prime is 1218941. The reversal of 1218924 is 4298121.

It is not an unprimeable number, because it can be changed into a prime (1218923) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1419 + ... + 2109.

2^1218924 is an apocalyptic number.

1218924 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 1218924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1794702).

1218924 is an abundant number, since it is smaller than the sum of its proper divisors (2370480).

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

1218924 is a wasteful number, since it uses less digits than its factorization.

1218924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715 (or 703 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 1218924 is about 1104.0489119600. The cubic root of 1218924 is about 106.8215501688.

It can be divided in two parts, 121 and 8924, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 1218924 in words is "one million, two hundred eighteen thousand, nine hundred twenty-four".