28529088 has 56 divisors (see below), whose sum is σ = 86270592. Its totient is φ = 8150784.

The previous prime is 28529041. The next prime is 28529101. The reversal of 28529088 is 88092582.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×28529088² = 1627817724223488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9270 + ... + 11957.

Almost surely, 2^28529088 is an apocalyptic number.

28529088 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28529088 is an abundant number, since it is smaller than the sum of its proper divisors (57741504).

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

28529088 is a wasteful number, since it uses less digits than its factorization.

28529088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21249 (or 21239 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 42.

The square root of 28529088 is about 5341.2627720418. The cubic root of 28529088 is about 305.5596211372.

The spelling of 28529088 in words is "twenty-eight million, five hundred twenty-nine thousand, eighty-eight".