28111454 has 8 divisors (see below), whose sum is σ = 48191088. Its totient is φ = 12047760.

The previous prime is 28111417. The next prime is 28111459. The reversal of 28111454 is 45411182.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28111459) 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, 1003967 + ... + 1003994.

It is an arithmetic number, because the mean of its divisors is an integer number (6023886).

Almost surely, 2^28111454 is an apocalyptic number.

28111454 is a deficient number, since it is larger than the sum of its proper divisors (20079634).

28111454 is a wasteful number, since it uses less digits than its factorization.

28111454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2007970.

The product of its digits is 1280, while the sum is 26.

The square root of 28111454 is about 5302.0235759566. The cubic root of 28111454 is about 304.0612685259.

The spelling of 28111454 in words is "twenty-eight million, one hundred eleven thousand, four hundred fifty-four".