5621605428 has 48 divisors (see below), whose sum is σ = 13237138880. Its totient is φ = 1856784384.

The previous prime is 5621605403. The next prime is 5621605499. The reversal of 5621605428 is 8245061265.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 710100 + ... + 717972.

Almost surely, 2^5621605428 is an apocalyptic number.

It is an amenable number.

5621605428 is an abundant number, since it is smaller than the sum of its proper divisors (7615533452).

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

5621605428 is a wasteful number, since it uses less digits than its factorization.

5621605428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8416 (or 8414 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 5621605428 is about 74977.3661047119. The cubic root of 5621605428 is about 1778.0888282432.

The spelling of 5621605428 in words is "five billion, six hundred twenty-one million, six hundred five thousand, four hundred twenty-eight".