28251754 has 4 divisors (see below), whose sum is σ = 42377634. Its totient is φ = 14125876.

The previous prime is 28251733. The next prime is 28251781. The reversal of 28251754 is 45715282.

It is a happy number.

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., 20043529 + 8208225 = 4477^2 + 2865^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7062937 + ... + 7062940.

Almost surely, 2^28251754 is an apocalyptic number.

28251754 is a deficient number, since it is larger than the sum of its proper divisors (14125880).

28251754 is a wasteful number, since it uses less digits than its factorization.

28251754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14125879.

The product of its digits is 22400, while the sum is 34.

The square root of 28251754 is about 5315.2379062465. The cubic root of 28251754 is about 304.5662705389.

The spelling of 28251754 in words is "twenty-eight million, two hundred fifty-one thousand, seven hundred fifty-four".