28401446 has 8 divisors (see below), whose sum is σ = 42864024. Its totient is φ = 14113440.

The previous prime is 28401433. The next prime is 28401463. The reversal of 28401446 is 64410482.

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, 43235 + ... + 43886.

It is an arithmetic number, because the mean of its divisors is an integer number (5358003).

Almost surely, 2^28401446 is an apocalyptic number.

28401446 is a deficient number, since it is larger than the sum of its proper divisors (14462578).

28401446 is a wasteful number, since it uses less digits than its factorization.

28401446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87286.

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 28401446 is about 5329.3007045953. The cubic root of 28401446 is about 305.1032383649.

The spelling of 28401446 in words is "twenty-eight million, four hundred one thousand, four hundred forty-six".