28650555 has 24 divisors (see below), whose sum is σ = 49788960. Its totient is φ = 15240960.

The previous prime is 28650551. The next prime is 28650563. The reversal of 28650555 is 55505682.

It is not a de Polignac number, because 28650555 - 2² = 28650551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28650551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27891 + ... + 28899.

It is an arithmetic number, because the mean of its divisors is an integer number (2074540).

Almost surely, 2^28650555 is an apocalyptic number.

28650555 is a deficient number, since it is larger than the sum of its proper divisors (21138405).

28650555 is a wasteful number, since it uses less digits than its factorization.

28650555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1651 (or 1648 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The square root of 28650555 is about 5352.6213204373. The cubic root of 28650555 is about 305.9926629024.

The spelling of 28650555 in words is "twenty-eight million, six hundred fifty thousand, five hundred fifty-five".