28234658 has 4 divisors (see below), whose sum is σ = 42351990. Its totient is φ = 14117328.

The previous prime is 28234649. The next prime is 28234673. The reversal of 28234658 is 85643282.

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., 22819729 + 5414929 = 4777^2 + 2327^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7058663 + ... + 7058666.

Almost surely, 2^28234658 is an apocalyptic number.

28234658 is a deficient number, since it is larger than the sum of its proper divisors (14117332).

28234658 is a wasteful number, since it uses less digits than its factorization.

28234658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14117331.

The product of its digits is 92160, while the sum is 38.

The square root of 28234658 is about 5313.6294564074. The cubic root of 28234658 is about 304.5048240226.

The spelling of 28234658 in words is "twenty-eight million, two hundred thirty-four thousand, six hundred fifty-eight".