5428021608 has 24 divisors (see below), whose sum is σ = 14700892050. Its totient is φ = 1809340512.

The previous prime is 5428021583. The next prime is 5428021649. The reversal of 5428021608 is 8061208245.

5428021608 is a `hidden beast` number, since 5 + 4 + 28 + 0 + 21 + 608 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4353624324 + 1074397284 = 65982^2 + 32778^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37694523 + ... + 37694666.

Almost surely, 2^5428021608 is an apocalyptic number.

It is an amenable number.

5428021608 is an abundant number, since it is smaller than the sum of its proper divisors (9272870442).

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

5428021608 is a wasteful number, since it uses less digits than its factorization.

5428021608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75389201 (or 75389194 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 5428021608 is about 73675.1084695503. The cubic root of 5428021608 is about 1757.4400636502.

The spelling of 5428021608 in words is "five billion, four hundred twenty-eight million, twenty-one thousand, six hundred eight".