28801942 has 16 divisors (see below), whose sum is σ = 46957680. Its totient is φ = 13169952.

The previous prime is 28801909. The next prime is 28801951. The reversal of 28801942 is 24910882.

It is a junction number, because it is equal to n+sod(n) for n = 28801898 and 28801907.

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 in 7 ways as a sum of consecutive naturals, for example, 2248 + ... + 7915.

It is an arithmetic number, because the mean of its divisors is an integer number (2934855).

Almost surely, 2^28801942 is an apocalyptic number.

28801942 is a deficient number, since it is larger than the sum of its proper divisors (18155738).

28801942 is a wasteful number, since it uses less digits than its factorization.

28801942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10287.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 28801942 is about 5366.7440781166. The cubic root of 28801942 is about 306.5306624920.

The spelling of 28801942 in words is "twenty-eight million, eight hundred one thousand, nine hundred forty-two".