28878254 has 8 divisors (see below), whose sum is σ = 44027688. Its totient is φ = 14202360.

The previous prime is 28878251. The next prime is 28878281. The reversal of 28878254 is 45287882.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28878251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118232 + ... + 118475.

It is an arithmetic number, because the mean of its divisors is an integer number (5503461).

Almost surely, 2^28878254 is an apocalyptic number.

28878254 is a deficient number, since it is larger than the sum of its proper divisors (15149434).

28878254 is a wasteful number, since it uses less digits than its factorization.

28878254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236770.

The product of its digits is 286720, while the sum is 44.

The square root of 28878254 is about 5373.8490860835. The cubic root of 28878254 is about 306.8011458611.

The spelling of 28878254 in words is "twenty-eight million, eight hundred seventy-eight thousand, two hundred fifty-four".