28026740 has 24 divisors (see below), whose sum is σ = 67264512. Its totient is φ = 9609120.

The previous prime is 28026737. The next prime is 28026749. The reversal of 28026740 is 4762082.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28026749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99956 + ... + 100235.

It is an arithmetic number, because the mean of its divisors is an integer number (2802688).

Almost surely, 2^28026740 is an apocalyptic number.

28026740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28026740 is an abundant number, since it is smaller than the sum of its proper divisors (39237772).

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

28026740 is a wasteful number, since it uses less digits than its factorization.

28026740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200207 (or 200205 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 28026740 is about 5294.0287116713. The cubic root of 28026740 is about 303.7555311812.

The spelling of 28026740 in words is "twenty-eight million, twenty-six thousand, seven hundred forty".