28488346 has 4 divisors (see below), whose sum is σ = 42732522. Its totient is φ = 14244172.

The previous prime is 28488337. The next prime is 28488359. The reversal of 28488346 is 64388482.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 28249225 + 239121 = 5315^2 + 489^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7122085 + ... + 7122088.

Almost surely, 2^28488346 is an apocalyptic number.

28488346 is a deficient number, since it is larger than the sum of its proper divisors (14244176).

28488346 is a wasteful number, since it uses less digits than its factorization.

28488346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14244175.

The product of its digits is 294912, while the sum is 43.

The square root of 28488346 is about 5337.4475173064. The cubic root of 28488346 is about 305.4140966708.

The spelling of 28488346 in words is "twenty-eight million, four hundred eighty-eight thousand, three hundred forty-six".