1206800478 has 128 divisors (see below), whose sum is σ = 3088834560. Its totient is φ = 346325760.

The previous prime is 1206800477. The next prime is 1206800479. The reversal of 1206800478 is 8740086021.

1206800478 is a `hidden beast` number, since 120 + 68 + 0 + 0 + 478 = 666.

It is an interprime number because it is at equal distance from previous prime (1206800477) and next prime (1206800479).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206800477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 661075 + ... + 662897.

It is an arithmetic number, because the mean of its divisors is an integer number (24131520).

Almost surely, 2^1206800478 is an apocalyptic number.

1206800478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1206800478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1544417280).

1206800478 is an abundant number, since it is smaller than the sum of its proper divisors (1882034082).

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

1206800478 is a wasteful number, since it uses less digits than its factorization.

1206800478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911 (or 1905 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 1206800478 is about 34739.0339243912. The cubic root of 1206800478 is about 1064.6621741439.

Adding to 1206800478 its reverse (8740086021), we get a palindrome (9946886499).

The spelling of 1206800478 in words is "one billion, two hundred six million, eight hundred thousand, four hundred seventy-eight".