28573741 has 4 divisors (see below), whose sum is σ = 32655712. Its totient is φ = 24491772.

The previous prime is 28573709. The next prime is 28573757. The reversal of 28573741 is 14737582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14737582 = 2 ⋅7368791.

It is a cyclic number.

It is not a de Polignac number, because 28573741 - 2⁵ = 28573709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28573741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28573771) 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, 2040975 + ... + 2040988.

It is an arithmetic number, because the mean of its divisors is an integer number (8163928).

Almost surely, 2^28573741 is an apocalyptic number.

It is an amenable number.

28573741 is a deficient number, since it is larger than the sum of its proper divisors (4081971).

28573741 is an equidigital number, since it uses as much as digits as its factorization.

28573741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4081970.

The product of its digits is 47040, while the sum is 37.

The square root of 28573741 is about 5345.4411417581. The cubic root of 28573741 is about 305.7189560758.

The spelling of 28573741 in words is "twenty-eight million, five hundred seventy-three thousand, seven hundred forty-one".