28646234 has 8 divisors (see below), whose sum is σ = 43412628. Its totient is φ = 14175360.

The previous prime is 28646221. The next prime is 28646239. The reversal of 28646234 is 43264682.

It can be written as a sum of positive squares in 2 ways, for example, as 27071209 + 1575025 = 5203^2 + 1255^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 28646194 and 28646203.

It is not an unprimeable number, because it can be changed into a prime (28646239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73637 + ... + 74024.

Almost surely, 2^28646234 is an apocalyptic number.

28646234 is a deficient number, since it is larger than the sum of its proper divisors (14766394).

28646234 is a wasteful number, since it uses less digits than its factorization.

28646234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147760.

The product of its digits is 55296, while the sum is 35.

The square root of 28646234 is about 5352.2176712088. The cubic root of 28646234 is about 305.9772791309.

The spelling of 28646234 in words is "twenty-eight million, six hundred forty-six thousand, two hundred thirty-four".