28670746 has 8 divisors (see below), whose sum is σ = 46314324. Its totient is φ = 13232640.

The previous prime is 28670731. The next prime is 28670777. The reversal of 28670746 is 64707682.

It can be written as a sum of positive squares in 2 ways, for example, as 27973521 + 697225 = 5289^2 + 835^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 28670699 and 28670708.

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, 551335 + ... + 551386.

Almost surely, 2^28670746 is an apocalyptic number.

28670746 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28670746 is a deficient number, since it is larger than the sum of its proper divisors (17643578).

28670746 is a wasteful number, since it uses less digits than its factorization.

28670746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102736.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 28670746 is about 5354.5070734849. The cubic root of 28670746 is about 306.0645270957.

The spelling of 28670746 in words is "twenty-eight million, six hundred seventy thousand, seven hundred forty-six".