28788026 has 16 divisors (see below), whose sum is σ = 44748288. Its totient is φ = 13875600.

The previous prime is 28788007. The next prime is 28788037. The reversal of 28788026 is 62088782.

28788026 = 419² + 420² + ... + 542².

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18536 + ... + 20028.

It is an arithmetic number, because the mean of its divisors is an integer number (2796768).

Almost surely, 2^28788026 is an apocalyptic number.

28788026 is a deficient number, since it is larger than the sum of its proper divisors (15960262).

28788026 is a wasteful number, since it uses less digits than its factorization.

28788026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1837.

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 28788026 is about 5365.4474184359. The cubic root of 28788026 is about 306.4812865635.

The spelling of 28788026 in words is "twenty-eight million, seven hundred eighty-eight thousand, twenty-six".