28192541 has 4 divisors (see below), whose sum is σ = 30361212. Its totient is φ = 26023872.

The previous prime is 28192537. The next prime is 28192583. The reversal of 28192541 is 14529182.

28192541 = 3754² + 3755².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14529182 = 2 ⋅7264591.

It can be written as a sum of positive squares in 2 ways, for example, as 14092516 + 14100025 = 3754^2 + 3755^2 .

It is a cyclic number.

It is not a de Polignac number, because 28192541 - 2² = 28192537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28192498 and 28192507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28102541) 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, 1084316 + ... + 1084341.

It is an arithmetic number, because the mean of its divisors is an integer number (7590303).

Almost surely, 2^28192541 is an apocalyptic number.

28192541 is the 3755-th centered square number.

It is an amenable number.

28192541 is a deficient number, since it is larger than the sum of its proper divisors (2168671).

28192541 is a wasteful number, since it uses less digits than its factorization.

28192541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168670.

The product of its digits is 5760, while the sum is 32.

The square root of 28192541 is about 5309.6648670137. The cubic root of 28192541 is about 304.3533410261.

The spelling of 28192541 in words is "twenty-eight million, one hundred ninety-two thousand, five hundred forty-one".