220515028 has 12 divisors (see below), whose sum is σ = 398349952. Its totient is φ = 106700760.

The previous prime is 220515019. The next prime is 220515049. The reversal of 220515028 is 820515022.

It is a junction number, because it is equal to n+sod(n) for n = 220514993 and 220515011.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 889050 + ... + 889297.

Almost surely, 2^220515028 is an apocalyptic number.

It is an amenable number.

220515028 is a deficient number, since it is larger than the sum of its proper divisors (177834924).

220515028 is a wasteful number, since it uses less digits than its factorization.

220515028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778382 (or 1778380 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 220515028 is about 14849.7484153773. The cubic root of 220515028 is about 604.1517863340.

The spelling of 220515028 in words is "two hundred twenty million, five hundred fifteen thousand, twenty-eight".