28788626 has 8 divisors (see below), whose sum is σ = 43351740. Its totient is φ = 14338048.

The previous prime is 28788611. The next prime is 28788647. The reversal of 28788626 is 62688782.

It can be written as a sum of positive squares in 2 ways, for example, as 19492225 + 9296401 = 4415^2 + 3049^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27491 + ... + 28518.

Almost surely, 2^28788626 is an apocalyptic number.

28788626 is a deficient number, since it is larger than the sum of its proper divisors (14563114).

28788626 is a wasteful number, since it uses less digits than its factorization.

28788626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56268.

The product of its digits is 516096, while the sum is 47.

The square root of 28788626 is about 5365.5033314685. The cubic root of 28788626 is about 306.4834157762.

The spelling of 28788626 in words is "twenty-eight million, seven hundred eighty-eight thousand, six hundred twenty-six".