28071446 has 8 divisors (see below), whose sum is σ = 45346224. Its totient is φ = 12956040.

The previous prime is 28071413. The next prime is 28071469. The reversal of 28071446 is 64417082.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 539810 + ... + 539861.

It is an arithmetic number, because the mean of its divisors is an integer number (5668278).

Almost surely, 2^28071446 is an apocalyptic number.

28071446 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28071446 is a deficient number, since it is larger than the sum of its proper divisors (17274778).

28071446 is a wasteful number, since it uses less digits than its factorization.

28071446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079686.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 28071446 is about 5298.2493335063. The cubic root of 28071446 is about 303.9169541741.

The spelling of 28071446 in words is "twenty-eight million, seventy-one thousand, four hundred forty-six".