28147046 has 4 divisors (see below), whose sum is σ = 42220572. Its totient is φ = 14073522.

The previous prime is 28147001. The next prime is 28147073. The reversal of 28147046 is 64074182.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×28147046² = 1584512397052232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7036760 + ... + 7036763.

It is an arithmetic number, because the mean of its divisors is an integer number (10555143).

Almost surely, 2^28147046 is an apocalyptic number.

28147046 is a deficient number, since it is larger than the sum of its proper divisors (14073526).

28147046 is a wasteful number, since it uses less digits than its factorization.

28147046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14073525.

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

The square root of 28147046 is about 5305.3789685563. The cubic root of 28147046 is about 304.1895387150.

The spelling of 28147046 in words is "twenty-eight million, one hundred forty-seven thousand, forty-six".