28735245 has 48 divisors (see below), whose sum is σ = 62105472. Its totient is φ = 11940480.

The previous prime is 28735241. The next prime is 28735261. The reversal of 28735245 is 54253782.

28735245 = 151² + 152² + ... + 447².

It is not a de Polignac number, because 28735245 - 2² = 28735241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28735241) 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, 682 + ... + 7611.

It is an arithmetic number, because the mean of its divisors is an integer number (1293864).

Almost surely, 2^28735245 is an apocalyptic number.

It is an amenable number.

28735245 is an abundant number, since it is smaller than the sum of its proper divisors (33370227).

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

28735245 is a wasteful number, since it uses less digits than its factorization.

28735245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8322 (or 8319 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 28735245 is about 5360.5265599566. The cubic root of 28735245 is about 306.2938673799.

It can be divided in two parts, 2873 and 5245, that added together give a palindrome (8118).

The spelling of 28735245 in words is "twenty-eight million, seven hundred thirty-five thousand, two hundred forty-five".