1522626660 has 120 divisors (see below), whose sum is σ = 4792427640. Its totient is φ = 404683776.

The previous prime is 1522626653. The next prime is 1522626661. The reversal of 1522626660 is 666262251.

It can be written as a sum of positive squares in 4 ways, for example, as 106007616 + 1416619044 = 10296^2 + 37638^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1522626661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 544546 + ... + 547334.

It is an arithmetic number, because the mean of its divisors is an integer number (39936897).

Almost surely, 2^1522626660 is an apocalyptic number.

1522626660 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 1522626660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2396213820).

1522626660 is an abundant number, since it is smaller than the sum of its proper divisors (3269800980).

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

1522626660 is a wasteful number, since it uses less digits than its factorization.

1522626660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3147 (or 3136 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 1522626660 is about 39020.8490425311. The cubic root of 1522626660 is about 1150.4413328145.

The spelling of 1522626660 in words is "one billion, five hundred twenty-two million, six hundred twenty-six thousand, six hundred sixty".