28946422 has 8 divisors (see below), whose sum is σ = 43468056. Its totient is φ = 14457072.

The previous prime is 28946417. The next prime is 28946429. The reversal of 28946422 is 22464982.

It is a sphenic number, since it is the product of 3 distinct primes.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5688 + ... + 9499.

It is an arithmetic number, because the mean of its divisors is an integer number (5433507).

Almost surely, 2^28946422 is an apocalyptic number.

28946422 is a deficient number, since it is larger than the sum of its proper divisors (14521634).

28946422 is a wasteful number, since it uses less digits than its factorization.

28946422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16142.

The product of its digits is 55296, while the sum is 37.

The square root of 28946422 is about 5380.1879149338. The cubic root of 28946422 is about 307.0423606520.

It can be divided in two parts, 2894 and 6422, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 28946422 in words is "twenty-eight million, nine hundred forty-six thousand, four hundred twenty-two".