1328497530 has 16 divisors (see below), whose sum is σ = 3188394144. Its totient is φ = 354266000.

The previous prime is 1328497519. The next prime is 1328497531. The reversal of 1328497530 is 357948231.

It is a super-2 number, since 2×1328497530² = 3529811374432201800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1328497531) 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, 22141596 + ... + 22141655.

It is an arithmetic number, because the mean of its divisors is an integer number (199274634).

Almost surely, 2^1328497530 is an apocalyptic number.

1328497530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1328497530 is an abundant number, since it is smaller than the sum of its proper divisors (1859896614).

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

1328497530 is a wasteful number, since it uses less digits than its factorization.

1328497530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44283261.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 1328497530 is about 36448.5600538622. The cubic root of 1328497530 is about 1099.3101818254.

The spelling of 1328497530 in words is "one billion, three hundred twenty-eight million, four hundred ninety-seven thousand, five hundred thirty".