28717026 has 32 divisors (see below), whose sum is σ = 62088768. Its totient is φ = 8802240.

The previous prime is 28717021. The next prime is 28717079. The reversal of 28717026 is 62071782.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28717021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26536 + ... + 27596.

It is an arithmetic number, because the mean of its divisors is an integer number (1940274).

Almost surely, 2^28717026 is an apocalyptic number.

28717026 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28717026 is an abundant number, since it is smaller than the sum of its proper divisors (33371742).

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

28717026 is a wasteful number, since it uses less digits than its factorization.

28717026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 28717026 is about 5358.8269238706. The cubic root of 28717026 is about 306.2291205535.

The spelling of 28717026 in words is "twenty-eight million, seven hundred seventeen thousand, twenty-six".