5428518021 has 20 divisors (see below), whose sum is σ = 8111359872. Its totient is φ = 3618078408.

The previous prime is 5428517993. The next prime is 5428518023. The reversal of 5428518021 is 1208158245.

5428518021 is a `hidden beast` number, since 542 + 85 + 18 + 0 + 21 = 666.

It is not a de Polignac number, because 5428518021 - 2¹³ = 5428509829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5428518023) 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 19 ways as a sum of consecutive naturals, for example, 469516 + ... + 480938.

Almost surely, 2^5428518021 is an apocalyptic number.

It is an amenable number.

5428518021 is a deficient number, since it is larger than the sum of its proper divisors (2682841851).

5428518021 is a wasteful number, since it uses less digits than its factorization.

5428518021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17302 (or 17293 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 36.

The square root of 5428518021 is about 73678.4773254714. The cubic root of 5428518021 is about 1757.4936368526.

The spelling of 5428518021 in words is "five billion, four hundred twenty-eight million, five hundred eighteen thousand, twenty-one".