28487794 has 4 divisors (see below), whose sum is σ = 42731694. Its totient is φ = 14243896.

The previous prime is 28487741. The next prime is 28487803. The reversal of 28487794 is 49778482.

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., 28483569 + 4225 = 5337^2 + 65^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7121947 + ... + 7121950.

Almost surely, 2^28487794 is an apocalyptic number.

28487794 is a deficient number, since it is larger than the sum of its proper divisors (14243900).

28487794 is a wasteful number, since it uses less digits than its factorization.

28487794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14243899.

The product of its digits is 903168, while the sum is 49.

The square root of 28487794 is about 5337.3958069456. The cubic root of 28487794 is about 305.4121240552.

The spelling of 28487794 in words is "twenty-eight million, four hundred eighty-seven thousand, seven hundred ninety-four".