28140126 has 32 divisors (see below), whose sum is σ = 66398208. Its totient is φ = 7780320.

The previous prime is 28140097. The next prime is 28140131. The reversal of 28140126 is 62104182.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28140096 and 28140105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9505 + ... + 12108.

It is an arithmetic number, because the mean of its divisors is an integer number (2074944).

Almost surely, 2^28140126 is an apocalyptic number.

28140126 is an abundant number, since it is smaller than the sum of its proper divisors (38258082).

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

28140126 is a wasteful number, since it uses less digits than its factorization.

28140126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21656.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 28140126 is about 5304.7267601640. The cubic root of 28140126 is about 304.1646081635.

The spelling of 28140126 in words is "twenty-eight million, one hundred forty thousand, one hundred twenty-six".