28634491903 has 8 divisors (see below), whose sum is σ = 28692786816. Its totient is φ = 28576258200.

The previous prime is 28634491901. The next prime is 28634491967. The reversal of 28634491903 is 30919443682.

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

It is a cyclic number.

It is not a de Polignac number, because 28634491903 - 2¹ = 28634491901 is a prime.

It is a super-2 number, since 2×28634491903² (a number of 22 digits) 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 (28634491901) 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, 986800 + ... + 1015402.

It is an arithmetic number, because the mean of its divisors is an integer number (3586598352).

Almost surely, 2^28634491903 is an apocalyptic number.

28634491903 is a deficient number, since it is larger than the sum of its proper divisors (58294913).

28634491903 is a wasteful number, since it uses less digits than its factorization.

28634491903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30605.

The product of its (nonzero) digits is 1119744, while the sum is 49.

The spelling of 28634491903 in words is "twenty-eight billion, six hundred thirty-four million, four hundred ninety-one thousand, nine hundred three".