28630774 has 4 divisors (see below), whose sum is σ = 42946164. Its totient is φ = 14315386.

The previous prime is 28630769. The next prime is 28630783. The reversal of 28630774 is 47703682.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7157692 + ... + 7157695.

It is an arithmetic number, because the mean of its divisors is an integer number (10736541).

Almost surely, 2^28630774 is an apocalyptic number.

28630774 is a deficient number, since it is larger than the sum of its proper divisors (14315390).

28630774 is a wasteful number, since it uses less digits than its factorization.

28630774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14315389.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 28630774 is about 5350.7732151531. The cubic root of 28630774 is about 305.9222252395.

The spelling of 28630774 in words is "twenty-eight million, six hundred thirty thousand, seven hundred seventy-four".