1228480 has 56 divisors (see below), whose sum is σ = 3200400. Its totient is φ = 445440.

The previous prime is 1228459. The next prime is 1228489. The reversal of 1228480 is 848221.

1228480 = T₁₅₉ + T₁₆₀ + ... + T₂₂₄.

It is a super-2 number, since 2×1228480² = 3018326220800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3346 + ... + 3694.

It is an arithmetic number, because the mean of its divisors is an integer number (57150).

2^1228480 is an apocalyptic number.

1228480 is a gapful number since it is divisible by the number (10) 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 1228480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1600200).

1228480 is an abundant number, since it is smaller than the sum of its proper divisors (1971920).

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

1228480 is a wasteful number, since it uses less digits than its factorization.

1228480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 1228480 is about 1108.3681698786. The cubic root of 1228480 is about 107.0999735261.

The spelling of 1228480 in words is "one million, two hundred twenty-eight thousand, four hundred eighty".