28127040 has 112 divisors (see below), whose sum is σ = 90635328. Its totient is φ = 7389184.

The previous prime is 28127023. The next prime is 28127063. The reversal of 28127040 is 4072182.

It is a super-2 number, since 2×28127040² = 1582260758323200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 28127040.

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, 79504 + ... + 79856.

It is an arithmetic number, because the mean of its divisors is an integer number (809244).

Almost surely, 2^28127040 is an apocalyptic number.

28127040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28127040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45317664).

28127040 is an abundant number, since it is smaller than the sum of its proper divisors (62508288).

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

28127040 is a wasteful number, since it uses less digits than its factorization.

28127040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 28127040 is about 5303.4931884561. The cubic root of 28127040 is about 304.1174523073.

The spelling of 28127040 in words is "twenty-eight million, one hundred twenty-seven thousand, forty".