28649466 has 12 divisors (see below), whose sum is σ = 62073882. Its totient is φ = 9549816.

The previous prime is 28649459. The next prime is 28649483. The reversal of 28649466 is 66494682.

It can be written as a sum of positive squares in only one way, i.e., 25857225 + 2792241 = 5085^2 + 1671^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 795801 + ... + 795836.

Almost surely, 2^28649466 is an apocalyptic number.

28649466 is an abundant number, since it is smaller than the sum of its proper divisors (33424416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28649466 is a wasteful number, since it uses less digits than its factorization.

28649466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591645 (or 1591642 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 28649466 is about 5352.5195936120. The cubic root of 28649466 is about 305.9887859533.

It can be divided in two parts, 2 and 8649466, that added together give a palindrome (8649468).

The spelling of 28649466 in words is "twenty-eight million, six hundred forty-nine thousand, four hundred sixty-six".