28949085 has 48 divisors (see below), whose sum is σ = 55194048. Its totient is φ = 13920000.

The previous prime is 28949069. The next prime is 28949087. The reversal of 28949085 is 58094982.

28949085 is a `hidden beast` number, since 2 + 89 + 490 + 85 = 666.

It is not a de Polignac number, because 28949085 - 2⁴ = 28949069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28949085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28949087) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 115210 + ... + 115460.

It is an arithmetic number, because the mean of its divisors is an integer number (1149876).

Almost surely, 2^28949085 is an apocalyptic number.

It is an amenable number.

28949085 is a deficient number, since it is larger than the sum of its proper divisors (26244963).

28949085 is a wasteful number, since it uses less digits than its factorization.

28949085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506 (or 503 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 28949085 is about 5380.4353913043. The cubic root of 28949085 is about 307.0517760785.

The spelling of 28949085 in words is "twenty-eight million, nine hundred forty-nine thousand, eighty-five".