28053740 has 96 divisors (see below), whose sum is σ = 73410624. Its totient is φ = 8847360.

The previous prime is 28053737. The next prime is 28053749. The reversal of 28053740 is 4735082.

28053740 = T₃₉₁ + T₃₉₂ + ... + T₆₁₀.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28053749) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 48332 + ... + 48908.

It is an arithmetic number, because the mean of its divisors is an integer number (764694).

Almost surely, 2^28053740 is an apocalyptic number.

28053740 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 28053740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36705312).

28053740 is an abundant number, since it is smaller than the sum of its proper divisors (45356884).

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

28053740 is a wasteful number, since it uses less digits than its factorization.

28053740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 28053740 is about 5296.5781406489. The cubic root of 28053740 is about 303.8530424282.

The spelling of 28053740 in words is "twenty-eight million, fifty-three thousand, seven hundred forty".