28974735 has 12 divisors (see below), whose sum is σ = 50222952. Its totient is φ = 15453168.

The previous prime is 28974721. The next prime is 28974763. The reversal of 28974735 is 53747982.

It is not a de Polignac number, because 28974735 - 2⁸ = 28974479 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 643883 = 28974735 / (2 + 8 + 9 + 7 + 4 + 7 + 3 + 5).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 321897 + ... + 321986.

It is an arithmetic number, because the mean of its divisors is an integer number (4185246).

Almost surely, 2^28974735 is an apocalyptic number.

28974735 is a deficient number, since it is larger than the sum of its proper divisors (21248217).

28974735 is a wasteful number, since it uses less digits than its factorization.

28974735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643894 (or 643891 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 28974735 is about 5382.8184996338. The cubic root of 28974735 is about 307.1424358592.

The spelling of 28974735 in words is "twenty-eight million, nine hundred seventy-four thousand, seven hundred thirty-five".