28245943 has 8 divisors (see below), whose sum is σ = 31057920. Its totient is φ = 25474680.

The previous prime is 28245907. The next prime is 28245961. The reversal of 28245943 is 34954282.

It is a happy number.

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

It is not a de Polignac number, because 28245943 - 2⁹ = 28245431 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 (28245983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8713 + ... + 11506.

It is an arithmetic number, because the mean of its divisors is an integer number (3882240).

Almost surely, 2^28245943 is an apocalyptic number.

28245943 is a deficient number, since it is larger than the sum of its proper divisors (2811977).

28245943 is a wasteful number, since it uses less digits than its factorization.

28245943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20357.

The product of its digits is 69120, while the sum is 37.

The square root of 28245943 is about 5314.6912422078. The cubic root of 28245943 is about 304.5453873995.

It can be divided in two parts, 282 and 45943, that added together give a square (46225 = 215²).

The spelling of 28245943 in words is "twenty-eight million, two hundred forty-five thousand, nine hundred forty-three".