28731614 has 4 divisors (see below), whose sum is σ = 43097424. Its totient is φ = 14365806.

The previous prime is 28731601. The next prime is 28731631. The reversal of 28731614 is 41613782.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 7182902 + ... + 7182905.

It is an arithmetic number, because the mean of its divisors is an integer number (10774356).

Almost surely, 2^28731614 is an apocalyptic number.

28731614 is a deficient number, since it is larger than the sum of its proper divisors (14365810).

28731614 is a wasteful number, since it uses less digits than its factorization.

28731614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14365809.

The product of its digits is 8064, while the sum is 32.

The square root of 28731614 is about 5360.1878698419. The cubic root of 28731614 is about 306.2809656874.

The spelling of 28731614 in words is "twenty-eight million, seven hundred thirty-one thousand, six hundred fourteen".