28487834 has 8 divisors (see below), whose sum is σ = 42779988. Its totient is φ = 14227840.

The previous prime is 28487813. The next prime is 28487861. The reversal of 28487834 is 43878482.

It can be written as a sum of positive squares in 2 ways, for example, as 28121809 + 366025 = 5303^2 + 605^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5687 + ... + 9450.

Almost surely, 2^28487834 is an apocalyptic number.

28487834 is a deficient number, since it is larger than the sum of its proper divisors (14292154).

28487834 is a wasteful number, since it uses less digits than its factorization.

28487834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16080.

The product of its digits is 344064, while the sum is 44.

The square root of 28487834 is about 5337.3995540900. The cubic root of 28487834 is about 305.4122669992.

The spelling of 28487834 in words is "twenty-eight million, four hundred eighty-seven thousand, eight hundred thirty-four".