28661246 has 4 divisors (see below), whose sum is σ = 42991872. Its totient is φ = 14330622.

The previous prime is 28661221. The next prime is 28661257. The reversal of 28661246 is 64216682.

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, 7165310 + ... + 7165313.

It is an arithmetic number, because the mean of its divisors is an integer number (10747968).

Almost surely, 2^28661246 is an apocalyptic number.

28661246 is a deficient number, since it is larger than the sum of its proper divisors (14330626).

28661246 is a wasteful number, since it uses less digits than its factorization.

28661246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14330625.

The product of its digits is 27648, while the sum is 35.

The square root of 28661246 is about 5353.6198968548. The cubic root of 28661246 is about 306.0307187183.

The spelling of 28661246 in words is "twenty-eight million, six hundred sixty-one thousand, two hundred forty-six".