28416253 has 4 divisors (see below), whose sum is σ = 28453788. Its totient is φ = 28378720.

The previous prime is 28416251. The next prime is 28416257. The reversal of 28416253 is 35261482.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 727609 + 27688644 = 853^2 + 5262^2 .

It is a cyclic number.

It is not a de Polignac number, because 28416253 - 2¹ = 28416251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28416251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17608 + ... + 19153.

It is an arithmetic number, because the mean of its divisors is an integer number (7113447).

Almost surely, 2^28416253 is an apocalyptic number.

It is an amenable number.

28416253 is a deficient number, since it is larger than the sum of its proper divisors (37535).

28416253 is an equidigital number, since it uses as much as digits as its factorization.

28416253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37534.

The product of its digits is 11520, while the sum is 31.

The square root of 28416253 is about 5330.6897302319. The cubic root of 28416253 is about 305.1562506750.

The spelling of 28416253 in words is "twenty-eight million, four hundred sixteen thousand, two hundred fifty-three".