1228960 has 24 divisors (see below), whose sum is σ = 2903796. Its totient is φ = 491520.

The previous prime is 1228951. The next prime is 1228961. The reversal of 1228960 is 698221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1227664 + 1296 = 1108^2 + 36^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1228961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3681 + ... + 4000.

2^1228960 is an apocalyptic number.

1228960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1228960 is an abundant number, since it is smaller than the sum of its proper divisors (1674836).

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

1228960 is an equidigital number, since it uses as much as digits as its factorization.

1228960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7696 (or 7688 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1228960 is about 1108.5846832786. The cubic root of 1228960 is about 107.1139206513.

It can be divided in two parts, 1228 and 960, that multiplied together give a triangular number (1178880 = T₁₅₃₅).

The spelling of 1228960 in words is "one million, two hundred twenty-eight thousand, nine hundred sixty".