1230918 has 32 divisors (see below), whose sum is σ = 2720256. Its totient is φ = 368928.

The previous prime is 1230913. The next prime is 1230941. The reversal of 1230918 is 8190321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230913) 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, 3171 + ... + 3537.

It is an arithmetic number, because the mean of its divisors is an integer number (85008).

2^1230918 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1230918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1360128).

1230918 is an abundant number, since it is smaller than the sum of its proper divisors (1489338).

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

1230918 is a wasteful number, since it uses less digits than its factorization.

1230918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 1230918 is about 1109.4674398107. The cubic root of 1230918 is about 107.1707757087.

The spelling of 1230918 in words is "one million, two hundred thirty thousand, nine hundred eighteen".