28946135 has 4 divisors (see below), whose sum is σ = 34735368. Its totient is φ = 23156904.

The previous prime is 28946131. The next prime is 28946143. The reversal of 28946135 is 53164982.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28946135 - 2² = 28946131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28946131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2894609 + ... + 2894618.

It is an arithmetic number, because the mean of its divisors is an integer number (8683842).

Almost surely, 2^28946135 is an apocalyptic number.

28946135 is a deficient number, since it is larger than the sum of its proper divisors (5789233).

28946135 is an equidigital number, since it uses as much as digits as its factorization.

28946135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5789232.

The product of its digits is 51840, while the sum is 38.

The square root of 28946135 is about 5380.1612429369. The cubic root of 28946135 is about 307.0413458869.

The spelling of 28946135 in words is "twenty-eight million, nine hundred forty-six thousand, one hundred thirty-five".