28520246 has 16 divisors (see below), whose sum is σ = 43718400. Its totient is φ = 13949928.

The previous prime is 28520243. The next prime is 28520251. The reversal of 28520246 is 64202582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28520243) 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, 30575 + ... + 31493.

It is an arithmetic number, because the mean of its divisors is an integer number (2732400).

Almost surely, 2^28520246 is an apocalyptic number.

28520246 is a deficient number, since it is larger than the sum of its proper divisors (15198154).

28520246 is a wasteful number, since it uses less digits than its factorization.

28520246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 28520246 is about 5340.4350010088. The cubic root of 28520246 is about 305.5280505833.

The spelling of 28520246 in words is "twenty-eight million, five hundred twenty thousand, two hundred forty-six".