28485929 has 4 divisors (see below), whose sum is σ = 28496640. Its totient is φ = 28475220.

The previous prime is 28485911. The next prime is 28485953. The reversal of 28485929 is 92958482.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 28485929 - 2⁸ = 28485673 is a prime.

It is a super-2 number, since 2×28485929² = 1622896301986082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28485979) 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, 2024 + ... + 7814.

It is an arithmetic number, because the mean of its divisors is an integer number (7124160).

Almost surely, 2^28485929 is an apocalyptic number.

It is an amenable number.

28485929 is a deficient number, since it is larger than the sum of its proper divisors (10711).

28485929 is an equidigital number, since it uses as much as digits as its factorization.

28485929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10710.

The product of its digits is 414720, while the sum is 47.

The square root of 28485929 is about 5337.2210934156. The cubic root of 28485929 is about 305.4054591417.

The spelling of 28485929 in words is "twenty-eight million, four hundred eighty-five thousand, nine hundred twenty-nine".