28348444 has 12 divisors (see below), whose sum is σ = 50121904. Its totient is φ = 14027904.

The previous prime is 28348427. The next prime is 28348447. The reversal of 28348444 is 44484382.

It is a super-2 number, since 2×28348444² = 1607268554442272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28348447) 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, 36144 + ... + 36919.

Almost surely, 2^28348444 is an apocalyptic number.

It is an amenable number.

28348444 is a deficient number, since it is larger than the sum of its proper divisors (21773460).

28348444 is a wasteful number, since it uses less digits than its factorization.

28348444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73164 (or 73162 counting only the distinct ones).

The product of its digits is 98304, while the sum is 37.

The square root of 28348444 is about 5324.3256850046. The cubic root of 28348444 is about 304.9133284142.

The spelling of 28348444 in words is "twenty-eight million, three hundred forty-eight thousand, four hundred forty-four".