655448028 has 12 divisors (see below), whose sum is σ = 1529378760. Its totient is φ = 218482672.

The previous prime is 655447999. The next prime is 655448077. The reversal of 655448028 is 820844556.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×655448028² = 859224234818177568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27310323 + ... + 27310346.

It is an arithmetic number, because the mean of its divisors is an integer number (127448230).

Almost surely, 2^655448028 is an apocalyptic number.

It is an amenable number.

655448028 is an abundant number, since it is smaller than the sum of its proper divisors (873930732).

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

655448028 is a wasteful number, since it uses less digits than its factorization.

655448028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54620676 (or 54620674 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 42.

The square root of 655448028 is about 25601.7192391449. The cubic root of 655448028 is about 868.6525263169.

The spelling of 655448028 in words is "six hundred fifty-five million, four hundred forty-eight thousand, twenty-eight".