28627140 has 48 divisors (see below), whose sum is σ = 80664192. Its totient is φ = 7585536.

The previous prime is 28627127. The next prime is 28627163. The reversal of 28627140 is 4172682.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 28627098 and 28627107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8592 + ... + 11448.

It is an arithmetic number, because the mean of its divisors is an integer number (1680504).

Almost surely, 2^28627140 is an apocalyptic number.

28627140 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 28627140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40332096).

28627140 is an abundant number, since it is smaller than the sum of its proper divisors (52037052).

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

28627140 is a wasteful number, since it uses less digits than its factorization.

28627140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3036 (or 3034 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 28627140 is about 5350.4336272867. The cubic root of 28627140 is about 305.9092814934.

The spelling of 28627140 in words is "twenty-eight million, six hundred twenty-seven thousand, one hundred forty".