1528380398 has 16 divisors (see below), whose sum is σ = 2337201216. Its totient is φ = 749330400.

The previous prime is 1528380397. The next prime is 1528380401. The reversal of 1528380398 is 8930838251.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1528380391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246140 + ... + 252272.

It is an arithmetic number, because the mean of its divisors is an integer number (146075076).

Almost surely, 2^1528380398 is an apocalyptic number.

1528380398 is a deficient number, since it is larger than the sum of its proper divisors (808820818).

1528380398 is a wasteful number, since it uses less digits than its factorization.

1528380398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8539.

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 1528380398 is about 39094.5059822988. The cubic root of 1528380398 is about 1151.8886163971. Note that the first 3 decimals are identical.

The spelling of 1528380398 in words is "one billion, five hundred twenty-eight million, three hundred eighty thousand, three hundred ninety-eight".