28662026 has 4 divisors (see below), whose sum is σ = 42993042. Its totient is φ = 14331012.

The previous prime is 28662019. The next prime is 28662031. The reversal of 28662026 is 62026682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62026682 = 2 ⋅31013341.

It can be written as a sum of positive squares in only one way, i.e., 19811401 + 8850625 = 4451^2 + 2975^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28661983 and 28662001.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7165505 + ... + 7165508.

Almost surely, 2^28662026 is an apocalyptic number.

28662026 is a deficient number, since it is larger than the sum of its proper divisors (14331016).

28662026 is a wasteful number, since it uses less digits than its factorization.

28662026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14331015.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 28662026 is about 5353.6927442654. The cubic root of 28662026 is about 306.0334948455.

The spelling of 28662026 in words is "twenty-eight million, six hundred sixty-two thousand, twenty-six".