28730774 has 16 divisors (see below), whose sum is σ = 45489600. Its totient is φ = 13571784.

The previous prime is 28730773. The next prime is 28730783. The reversal of 28730774 is 47703782.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28730773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16937 + ... + 18555.

It is an arithmetic number, because the mean of its divisors is an integer number (2843100).

Almost surely, 2^28730774 is an apocalyptic number.

28730774 is a deficient number, since it is larger than the sum of its proper divisors (16758826).

28730774 is a wasteful number, since it uses less digits than its factorization.

28730774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2107.

The product of its (nonzero) digits is 65856, while the sum is 38.

The square root of 28730774 is about 5360.1095138066. The cubic root of 28730774 is about 306.2779808392.

The spelling of 28730774 in words is "twenty-eight million, seven hundred thirty thousand, seven hundred seventy-four".