28456958 has 4 divisors (see below), whose sum is σ = 42685440. Its totient is φ = 14228478.

The previous prime is 28456951. The next prime is 28456969. The reversal of 28456958 is 85965482.

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

It is a super-2 number, since 2×28456958² = 1619596917227528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28456951) by changing a digit.

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 as a sum of consecutive naturals, namely, 7114238 + ... + 7114241.

It is an arithmetic number, because the mean of its divisors is an integer number (10671360).

Almost surely, 2^28456958 is an apocalyptic number.

28456958 is a deficient number, since it is larger than the sum of its proper divisors (14228482).

28456958 is a wasteful number, since it uses less digits than its factorization.

28456958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14228481.

The product of its digits is 691200, while the sum is 47.

The square root of 28456958 is about 5334.5063501696. The cubic root of 28456958 is about 305.3018886763.

The spelling of 28456958 in words is "twenty-eight million, four hundred fifty-six thousand, nine hundred fifty-eight".