28723246 has 4 divisors (see below), whose sum is σ = 43084872. Its totient is φ = 14361622.

The previous prime is 28723207. The next prime is 28723249. The reversal of 28723246 is 64232782.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28723249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7180810 + ... + 7180813.

It is an arithmetic number, because the mean of its divisors is an integer number (10771218).

Almost surely, 2^28723246 is an apocalyptic number.

28723246 is a deficient number, since it is larger than the sum of its proper divisors (14361626).

28723246 is a wasteful number, since it uses less digits than its factorization.

28723246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14361625.

The product of its digits is 32256, while the sum is 34.

The square root of 28723246 is about 5359.4072433432. The cubic root of 28723246 is about 306.2512283166.

The spelling of 28723246 in words is "twenty-eight million, seven hundred twenty-three thousand, two hundred forty-six".