28741004 has 18 divisors (see below), whose sum is σ = 51161292. Its totient is φ = 14127600.

The previous prime is 28740979. The next prime is 28741039. The reversal of 28741004 is 40014782.

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 5 ways as a sum of consecutive naturals, for example, 13919 + ... + 15849.

It is an arithmetic number, because the mean of its divisors is an integer number (2842294).

Almost surely, 2^28741004 is an apocalyptic number.

It is an amenable number.

28741004 is a deficient number, since it is larger than the sum of its proper divisors (22420288).

28741004 is a wasteful number, since it uses less digits than its factorization.

28741004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2057 (or 1994 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 28741004 is about 5361.0637004236. The cubic root of 28741004 is about 306.3143280668.

Adding to 28741004 its reverse (40014782), we get a palindrome (68755786).

The spelling of 28741004 in words is "twenty-eight million, seven hundred forty-one thousand, four".