28926145 has 4 divisors (see below), whose sum is σ = 34711380. Its totient is φ = 23140912.

The previous prime is 28926077. The next prime is 28926173. The reversal of 28926145 is 54162982.

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 21893041 + 7033104 = 4679^2 + 2652^2 .

It is a cyclic number.

It is not a de Polignac number, because 28926145 - 2¹³ = 28917953 is a prime.

It is a super-2 number, since 2×28926145² = 1673443729122050, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 2892610 + ... + 2892619.

It is an arithmetic number, because the mean of its divisors is an integer number (8677845).

Almost surely, 2^28926145 is an apocalyptic number.

It is an amenable number.

28926145 is a deficient number, since it is larger than the sum of its proper divisors (5785235).

28926145 is an equidigital number, since it uses as much as digits as its factorization.

28926145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5785234.

The product of its digits is 34560, while the sum is 37.

The square root of 28926145 is about 5378.3031710754. The cubic root of 28926145 is about 306.9706494026.

The spelling of 28926145 in words is "twenty-eight million, nine hundred twenty-six thousand, one hundred forty-five".