28146029 has 4 divisors (see below), whose sum is σ = 28409184. Its totient is φ = 27882876.

The previous prime is 28146023. The next prime is 28146031. The reversal of 28146029 is 92064182.

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 not a de Polignac number, because 28146029 - 2²⁰ = 27097453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28145986 and 28146004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28146023) 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, 131417 + ... + 131630.

It is an arithmetic number, because the mean of its divisors is an integer number (7102296).

Almost surely, 2^28146029 is an apocalyptic number.

It is an amenable number.

28146029 is a deficient number, since it is larger than the sum of its proper divisors (263155).

28146029 is a wasteful number, since it uses less digits than its factorization.

28146029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263154.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 28146029 is about 5305.2831215685. The cubic root of 28146029 is about 304.1858750447.

The spelling of 28146029 in words is "twenty-eight million, one hundred forty-six thousand, twenty-nine".