28000754 has 4 divisors (see below), whose sum is σ = 42001134. Its totient is φ = 14000376.

The previous prime is 28000741. The next prime is 28000757. The reversal of 28000754 is 45700082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45700082 = 2 ⋅22850041.

It can be written as a sum of positive squares in only one way, i.e., 26245129 + 1755625 = 5123^2 + 1325^2 .

It is not an unprimeable number, because it can be changed into a prime (28000757) by changing a digit.

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, 7000187 + ... + 7000190.

Almost surely, 2^28000754 is an apocalyptic number.

28000754 is a deficient number, since it is larger than the sum of its proper divisors (14000380).

28000754 is a wasteful number, since it uses less digits than its factorization.

28000754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14000379.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 28000754 is about 5291.5738679527. The cubic root of 28000754 is about 303.6616228632.

The spelling of 28000754 in words is "twenty-eight million, seven hundred fifty-four", and thus it is an aban number.