28626243 has 8 divisors (see below), whose sum is σ = 38980608. Its totient is φ = 18678024.

The previous prime is 28626239. The next prime is 28626253. The reversal of 28626243 is 34262682.

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

It is not a de Polignac number, because 28626243 - 2² = 28626239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28626253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101371 + ... + 101652.

It is an arithmetic number, because the mean of its divisors is an integer number (4872576).

Almost surely, 2^28626243 is an apocalyptic number.

28626243 is a deficient number, since it is larger than the sum of its proper divisors (10354365).

28626243 is a wasteful number, since it uses less digits than its factorization.

28626243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203073.

The product of its digits is 27648, while the sum is 33.

The square root of 28626243 is about 5350.3498016485. The cubic root of 28626243 is about 305.9060863495.

The spelling of 28626243 in words is "twenty-eight million, six hundred twenty-six thousand, two hundred forty-three".