28093454 has 4 divisors (see below), whose sum is σ = 42140184. Its totient is φ = 14046726.

The previous prime is 28093447. The next prime is 28093459. The reversal of 28093454 is 45439082.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28093459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7023362 + ... + 7023365.

It is an arithmetic number, because the mean of its divisors is an integer number (10535046).

Almost surely, 2^28093454 is an apocalyptic number.

28093454 is a deficient number, since it is larger than the sum of its proper divisors (14046730).

28093454 is a wasteful number, since it uses less digits than its factorization.

28093454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14046729.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 28093454 is about 5300.3258390405. The cubic root of 28093454 is about 303.9963570085.

The spelling of 28093454 in words is "twenty-eight million, ninety-three thousand, four hundred fifty-four".