28741903 has 4 divisors (see below), whose sum is σ = 28758600. Its totient is φ = 28725208.

The previous prime is 28741891. The next prime is 28741913. The reversal of 28741903 is 30914782.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28741903 is a prime.

It is a super-2 number, since 2×28741903² = 1652193976122818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28741913) by changing a digit.

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, 5425 + ... + 9322.

It is an arithmetic number, because the mean of its divisors is an integer number (7189650).

Almost surely, 2^28741903 is an apocalyptic number.

28741903 is a deficient number, since it is larger than the sum of its proper divisors (16697).

28741903 is a wasteful number, since it uses less digits than its factorization.

28741903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16696.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 28741903 is about 5361.1475450691. The cubic root of 28741903 is about 306.3175218048.

The spelling of 28741903 in words is "twenty-eight million, seven hundred forty-one thousand, nine hundred three".