1222528680 has 128 divisors (see below), whose sum is σ = 4106678400. Its totient is φ = 323481600.

The previous prime is 1222528649. The next prime is 1222528717. The reversal of 1222528680 is 868252221.

1222528680 is a `hidden beast` number, since 122 + 2 + 528 + 6 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137160 + ... + 145800.

It is an arithmetic number, because the mean of its divisors is an integer number (32083425).

Almost surely, 2^1222528680 is an apocalyptic number.

1222528680 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 1222528680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2053339200).

1222528680 is an abundant number, since it is smaller than the sum of its proper divisors (2884149720).

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

1222528680 is a wasteful number, since it uses less digits than its factorization.

1222528680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8792 (or 8782 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 1222528680 is about 34964.6776046913. The cubic root of 1222528680 is about 1069.2674637893.

The spelling of 1222528680 in words is "one billion, two hundred twenty-two million, five hundred twenty-eight thousand, six hundred eighty".