28625073 has 4 divisors (see below), whose sum is σ = 38166768. Its totient is φ = 19083380.

The previous prime is 28625063. The next prime is 28625081. The reversal of 28625073 is 37052682.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28625073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28625033) 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, 4770843 + ... + 4770848.

It is an arithmetic number, because the mean of its divisors is an integer number (9541692).

Almost surely, 2^28625073 is an apocalyptic number.

It is an amenable number.

28625073 is a deficient number, since it is larger than the sum of its proper divisors (9541695).

28625073 is an equidigital number, since it uses as much as digits as its factorization.

28625073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9541694.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 28625073 is about 5350.2404618858. The cubic root of 28625073 is about 305.9019186703.

The spelling of 28625073 in words is "twenty-eight million, six hundred twenty-five thousand, seventy-three".