28986498 has 54 divisors (see below), whose sum is σ = 66633411. Its totient is φ = 9456588.

The previous prime is 28986497. The next prime is 28986527. The reversal of 28986498 is 89468982.

It can be written as a sum of positive squares in only one way, i.e., 14493249 + 14493249 = 3807^2 + 3807^2 .

It is a tau number, because it is divible by the number of its divisors (54).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=3807.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (28986491) by changing a digit.

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 26 ways as a sum of consecutive naturals, for example, 616711 + ... + 616757.

Almost surely, 2^28986498 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28986498

28986498 is an abundant number, since it is smaller than the sum of its proper divisors (37646913).

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

28986498 is an frugal number, since it uses more digits than its factorization.

28986498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 52 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The square root of 28986498 is about 5383.9110319544. The cubic root of 28986498 is about 307.1839942222.

The spelling of 28986498 in words is "twenty-eight million, nine hundred eighty-six thousand, four hundred ninety-eight".