28974737 has 8 divisors (see below), whose sum is σ = 32463552. Its totient is φ = 25628400.

The previous prime is 28974721. The next prime is 28974763. The reversal of 28974737 is 73747982.

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

It is a cyclic number.

It is not a de Polignac number, because 28974737 - 2⁴ = 28974721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28974691 and 28974700.

It is not an unprimeable number, because it can be changed into a prime (28974767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35189 + ... + 36002.

It is an arithmetic number, because the mean of its divisors is an integer number (4057944).

Almost surely, 2^28974737 is an apocalyptic number.

It is an amenable number.

28974737 is a deficient number, since it is larger than the sum of its proper divisors (3488815).

28974737 is a wasteful number, since it uses less digits than its factorization.

28974737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71239.

The product of its digits is 592704, while the sum is 47.

The square root of 28974737 is about 5382.8186854101. The cubic root of 28974737 is about 307.1424429261.

The spelling of 28974737 in words is "twenty-eight million, nine hundred seventy-four thousand, seven hundred thirty-seven".