28119740 has 24 divisors (see below), whose sum is σ = 64420272. Its totient is φ = 10225280.

The previous prime is 28119739. The next prime is 28119743. The reversal of 28119740 is 4791182.

It is a junction number, because it is equal to n+sod(n) for n = 28119697 and 28119706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28119743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63689 + ... + 64128.

It is an arithmetic number, because the mean of its divisors is an integer number (2684178).

Almost surely, 2^28119740 is an apocalyptic number.

28119740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28119740 is an abundant number, since it is smaller than the sum of its proper divisors (36300532).

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

28119740 is a wasteful number, since it uses less digits than its factorization.

28119740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127837 (or 127835 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 28119740 is about 5302.8049181542. The cubic root of 28119740 is about 304.0911401478.

The spelling of 28119740 in words is "twenty-eight million, one hundred nineteen thousand, seven hundred forty".