28954258 has 4 divisors (see below), whose sum is σ = 43431390. Its totient is φ = 14477128.

The previous prime is 28954253. The next prime is 28954273. The reversal of 28954258 is 85245982.

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

It can be written as a sum of positive squares in only one way, i.e., 27531009 + 1423249 = 5247^2 + 1193^2 .

It is not an unprimeable number, because it can be changed into a prime (28954253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7238563 + ... + 7238566.

Almost surely, 2^28954258 is an apocalyptic number.

28954258 is a deficient number, since it is larger than the sum of its proper divisors (14477132).

28954258 is a wasteful number, since it uses less digits than its factorization.

28954258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14477131.

The product of its digits is 230400, while the sum is 43.

The square root of 28954258 is about 5380.9160930087. The cubic root of 28954258 is about 307.0700643277.

The spelling of 28954258 in words is "twenty-eight million, nine hundred fifty-four thousand, two hundred fifty-eight".