1228464 has 60 divisors (see below), whose sum is σ = 3627000. Its totient is φ = 387072.

The previous prime is 1228459. The next prime is 1228489. The reversal of 1228464 is 4648221.

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

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2512 + ... + 2960.

It is an arithmetic number, because the mean of its divisors is an integer number (60450).

2^1228464 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 1228464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1813500).

1228464 is an abundant number, since it is smaller than the sum of its proper divisors (2398536).

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

1228464 is a wasteful number, since it uses less digits than its factorization.

1228464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482 (or 473 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 1228464 is about 1108.3609520368. The cubic root of 1228464 is about 107.0995085593.

The spelling of 1228464 in words is "one million, two hundred twenty-eight thousand, four hundred sixty-four".