28641902 has 8 divisors (see below), whose sum is σ = 43035456. Its totient is φ = 14296752.

The previous prime is 28641881. The next prime is 28641917. The reversal of 28641902 is 20914682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10583 + ... + 13010.

It is an arithmetic number, because the mean of its divisors is an integer number (5379432).

Almost surely, 2^28641902 is an apocalyptic number.

28641902 is a deficient number, since it is larger than the sum of its proper divisors (14393554).

28641902 is a wasteful number, since it uses less digits than its factorization.

28641902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24202.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 28641902 is about 5351.8129638469. The cubic root of 28641902 is about 305.9618546439.

The spelling of 28641902 in words is "twenty-eight million, six hundred forty-one thousand, nine hundred two".