28946423 has 4 divisors (see below), whose sum is σ = 31577928. Its totient is φ = 26314920.

The previous prime is 28946417. The next prime is 28946429. The reversal of 28946423 is 32464982.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (28946417) and next prime (28946429).

It is a cyclic number.

It is not a de Polignac number, because 28946423 - 2¹² = 28942327 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 (28946429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1315736 + ... + 1315757.

It is an arithmetic number, because the mean of its divisors is an integer number (7894482).

Almost surely, 2^28946423 is an apocalyptic number.

28946423 is a deficient number, since it is larger than the sum of its proper divisors (2631505).

28946423 is a wasteful number, since it uses less digits than its factorization.

28946423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2631504.

The product of its digits is 82944, while the sum is 38.

The square root of 28946423 is about 5380.1880078674. The cubic root of 28946423 is about 307.0423641877.

The spelling of 28946423 in words is "twenty-eight million, nine hundred forty-six thousand, four hundred twenty-three".