28447046 has 8 divisors (see below), whose sum is σ = 42906864. Its totient is φ = 14144760.

The previous prime is 28447039. The next prime is 28447049. The reversal of 28447046 is 64074482.

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

It is a super-2 number, since 2×28447046² = 1618468852252232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28446997 and 28447015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28447049) 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, 38930 + ... + 39653.

It is an arithmetic number, because the mean of its divisors is an integer number (5363358).

Almost surely, 2^28447046 is an apocalyptic number.

28447046 is a deficient number, since it is larger than the sum of its proper divisors (14459818).

28447046 is a wasteful number, since it uses less digits than its factorization.

28447046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78766.

The product of its (nonzero) digits is 43008, while the sum is 35.

The square root of 28447046 is about 5333.5772235902. The cubic root of 28447046 is about 305.2664374317.

The spelling of 28447046 in words is "twenty-eight million, four hundred forty-seven thousand, forty-six".