28213041 has 4 divisors (see below), whose sum is σ = 37617392. Its totient is φ = 18808692.

The previous prime is 28212971. The next prime is 28213067. The reversal of 28213041 is 14031282.

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.

It is not a de Polignac number, because 28213041 - 2⁷ = 28212913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28212999 and 28213017.

It is not an unprimeable number, because it can be changed into a prime (28213091) 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, 4702171 + ... + 4702176.

It is an arithmetic number, because the mean of its divisors is an integer number (9404348).

Almost surely, 2^28213041 is an apocalyptic number.

It is an amenable number.

28213041 is a deficient number, since it is larger than the sum of its proper divisors (9404351).

28213041 is an equidigital number, since it uses as much as digits as its factorization.

28213041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9404350.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 28213041 is about 5311.5949582023. The cubic root of 28213041 is about 304.4270925883.

The spelling of 28213041 in words is "twenty-eight million, two hundred thirteen thousand, forty-one".