28740734 has 24 divisors (see below), whose sum is σ = 48224808. Its totient is φ = 12735840.

The previous prime is 28740721. The next prime is 28740737. The reversal of 28740734 is 43704782.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28740694 and 28740703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28740737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182984 + ... + 183140.

It is an arithmetic number, because the mean of its divisors is an integer number (2009367).

Almost surely, 2^28740734 is an apocalyptic number.

28740734 is a deficient number, since it is larger than the sum of its proper divisors (19484074).

28740734 is a wasteful number, since it uses less digits than its factorization.

28740734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 28740734 is about 5361.0385187947. The cubic root of 28740734 is about 306.3133688666.

The spelling of 28740734 in words is "twenty-eight million, seven hundred forty thousand, seven hundred thirty-four".