1528352680 has 16 divisors (see below), whose sum is σ = 3438793620. Its totient is φ = 611341056.

The previous prime is 1528352653. The next prime is 1528352681. The reversal of 1528352680 is 862538251.

It can be written as a sum of positive squares in 2 ways, for example, as 1448106916 + 80245764 = 38054^2 + 8958^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 38208817 = 1528352680 / (1 + 5 + 2 + 8 + 3 + 5 + 2 + 6 + 8 + 0).

It is not an unprimeable number, because it can be changed into a prime (1528352681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19104369 + ... + 19104448.

Almost surely, 2^1528352680 is an apocalyptic number.

1528352680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1528352680 is an abundant number, since it is smaller than the sum of its proper divisors (1910440940).

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

1528352680 is a wasteful number, since it uses less digits than its factorization.

1528352680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38208828 (or 38208824 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 1528352680 is about 39094.1514807522. The cubic root of 1528352680 is about 1151.8816529819.

The spelling of 1528352680 in words is "one billion, five hundred twenty-eight million, three hundred fifty-two thousand, six hundred eighty".