28712498 has 4 divisors (see below), whose sum is σ = 43068750. Its totient is φ = 14356248.

The previous prime is 28712459. The next prime is 28712501. The reversal of 28712498 is 89421782.

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., 23454649 + 5257849 = 4843^2 + 2293^2 .

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, 7178123 + ... + 7178126.

Almost surely, 2^28712498 is an apocalyptic number.

28712498 is a deficient number, since it is larger than the sum of its proper divisors (14356252).

28712498 is a wasteful number, since it uses less digits than its factorization.

28712498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14356251.

The product of its digits is 64512, while the sum is 41.

The square root of 28712498 is about 5358.4044266927. The cubic root of 28712498 is about 306.2130246627.

The spelling of 28712498 in words is "twenty-eight million, seven hundred twelve thousand, four hundred ninety-eight".