28717346 has 16 divisors (see below), whose sum is σ = 50818560. Its totient is φ = 11910240.

The previous prime is 28717333. The next prime is 28717349. The reversal of 28717346 is 64371782.

It is a super-2 number, since 2×28717346² = 1649371922567432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28717349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32651 + ... + 33518.

It is an arithmetic number, because the mean of its divisors is an integer number (3176160).

Almost surely, 2^28717346 is an apocalyptic number.

28717346 is a deficient number, since it is larger than the sum of its proper divisors (22101214).

28717346 is a wasteful number, since it uses less digits than its factorization.

28717346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66209.

The product of its digits is 56448, while the sum is 38.

The square root of 28717346 is about 5358.8567810681. The cubic root of 28717346 is about 306.2302580082.

The spelling of 28717346 in words is "twenty-eight million, seven hundred seventeen thousand, three hundred forty-six".