28201454 has 4 divisors (see below), whose sum is σ = 42302184. Its totient is φ = 14100726.

The previous prime is 28201451. The next prime is 28201463. The reversal of 28201454 is 45410282.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45410282 = 2 ⋅22705141.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28201451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7050362 + ... + 7050365.

It is an arithmetic number, because the mean of its divisors is an integer number (10575546).

Almost surely, 2^28201454 is an apocalyptic number.

28201454 is a deficient number, since it is larger than the sum of its proper divisors (14100730).

28201454 is a wasteful number, since it uses less digits than its factorization.

28201454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14100729.

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 28201454 is about 5310.5041191962. The cubic root of 28201454 is about 304.3854111578.

The spelling of 28201454 in words is "twenty-eight million, two hundred one thousand, four hundred fifty-four".