28253942 has 8 divisors (see below), whose sum is σ = 42800832. Its totient is φ = 13987000.

The previous prime is 28253933. The next prime is 28253963. The reversal of 28253942 is 24935282.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69734 + ... + 70137.

It is an arithmetic number, because the mean of its divisors is an integer number (5350104).

Almost surely, 2^28253942 is an apocalyptic number.

28253942 is a deficient number, since it is larger than the sum of its proper divisors (14546890).

28253942 is a wasteful number, since it uses less digits than its factorization.

28253942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139974.

The product of its digits is 34560, while the sum is 35.

The square root of 28253942 is about 5315.4437255981. The cubic root of 28253942 is about 304.5741328684.

The spelling of 28253942 in words is "twenty-eight million, two hundred fifty-three thousand, nine hundred forty-two".