28155126 has 16 divisors (see below), whose sum is σ = 57024000. Its totient is φ = 9266088.

The previous prime is 28155109. The next prime is 28155133. The reversal of 28155126 is 62155182.

It is a super-2 number, since 2×28155126² = 1585422240151752, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28155093 and 28155102.

It is a congruent number.

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, 29226 + ... + 30173.

It is an arithmetic number, because the mean of its divisors is an integer number (3564000).

Almost surely, 2^28155126 is an apocalyptic number.

28155126 is an abundant number, since it is smaller than the sum of its proper divisors (28868874).

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

28155126 is a wasteful number, since it uses less digits than its factorization.

28155126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59483.

The product of its digits is 4800, while the sum is 30.

The square root of 28155126 is about 5306.1404052286. The cubic root of 28155126 is about 304.2186432058.

The spelling of 28155126 in words is "twenty-eight million, one hundred fifty-five thousand, one hundred twenty-six".