28555088 has 10 divisors (see below), whose sum is σ = 55325514. Its totient is φ = 14277536.

The previous prime is 28555069. The next prime is 28555091. The reversal of 28555088 is 88055582.

It can be written as a sum of positive squares in only one way, i.e., 23116864 + 5438224 = 4808^2 + 2332^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 892331 + ... + 892362.

Almost surely, 2^28555088 is an apocalyptic number.

It is an amenable number.

28555088 is a deficient number, since it is larger than the sum of its proper divisors (26770426).

28555088 is a wasteful number, since it uses less digits than its factorization.

28555088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784701 (or 1784695 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 41.

The square root of 28555088 is about 5343.6960991434. The cubic root of 28555088 is about 305.6524169292.

The spelling of 28555088 in words is "twenty-eight million, five hundred fifty-five thousand, eighty-eight".