28455973 has 8 divisors (see below), whose sum is σ = 35022848. Its totient is φ = 22514544.

The previous prime is 28455961. The next prime is 28455979. The reversal of 28455973 is 37955482.

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

It is a de Polignac number, because none of the positive numbers 2^k-28455973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28455979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156261 + ... + 156442.

It is an arithmetic number, because the mean of its divisors is an integer number (4377856).

Almost surely, 2^28455973 is an apocalyptic number.

It is an amenable number.

28455973 is a deficient number, since it is larger than the sum of its proper divisors (6566875).

28455973 is a wasteful number, since it uses less digits than its factorization.

28455973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312723.

The product of its digits is 302400, while the sum is 43.

The square root of 28455973 is about 5334.4140259264. The cubic root of 28455973 is about 305.2983660952.

The spelling of 28455973 in words is "twenty-eight million, four hundred fifty-five thousand, nine hundred seventy-three".