28241951 has 4 divisors (see below), whose sum is σ = 28774872. Its totient is φ = 27709032.

The previous prime is 28241933. The next prime is 28241957. The reversal of 28241951 is 15914282.

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

It is a cyclic number.

It is not a de Polignac number, because 28241951 - 2⁶ = 28241887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28241957) 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, 266381 + ... + 266486.

It is an arithmetic number, because the mean of its divisors is an integer number (7193718).

Almost surely, 2^28241951 is an apocalyptic number.

28241951 is a deficient number, since it is larger than the sum of its proper divisors (532921).

28241951 is an equidigital number, since it uses as much as digits as its factorization.

28241951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532920.

The product of its digits is 5760, while the sum is 32.

The square root of 28241951 is about 5314.3156661982. The cubic root of 28241951 is about 304.5310395872.

It can be divided in two parts, 28241 and 951, that added together give a palindrome (29192).

The spelling of 28241951 in words is "twenty-eight million, two hundred forty-one thousand, nine hundred fifty-one".