28694938 has 8 divisors (see below), whose sum is σ = 44913888. Its totient is φ = 13723644.

The previous prime is 28694927. The next prime is 28694947. The reversal of 28694938 is 83949682.

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 = 28694891 and 28694900.

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, 311856 + ... + 311947.

It is an arithmetic number, because the mean of its divisors is an integer number (5614236).

Almost surely, 2^28694938 is an apocalyptic number.

28694938 is a deficient number, since it is larger than the sum of its proper divisors (16218950).

28694938 is a wasteful number, since it uses less digits than its factorization.

28694938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623828.

The product of its digits is 746496, while the sum is 49.

The square root of 28694938 is about 5356.7656286233. The cubic root of 28694938 is about 306.1505873080.

The spelling of 28694938 in words is "twenty-eight million, six hundred ninety-four thousand, nine hundred thirty-eight".