28730498 has 4 divisors (see below), whose sum is σ = 43095750. Its totient is φ = 14365248.

The previous prime is 28730479. The next prime is 28730501. The reversal of 28730498 is 89403782.

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., 27321529 + 1408969 = 5227^2 + 1187^2 .

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 as a sum of consecutive naturals, namely, 7182623 + ... + 7182626.

Almost surely, 2^28730498 is an apocalyptic number.

28730498 is a deficient number, since it is larger than the sum of its proper divisors (14365252).

28730498 is a wasteful number, since it uses less digits than its factorization.

28730498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14365251.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 28730498 is about 5360.0837680021. The cubic root of 28730498 is about 306.2770000907.

The spelling of 28730498 in words is "twenty-eight million, seven hundred thirty thousand, four hundred ninety-eight".