28949391476 has 12 divisors (see below), whose sum is σ = 50944461120. Its totient is φ = 14393831160.

The previous prime is 28949391473. The next prime is 28949391503. The reversal of 28949391476 is 67419394982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28949391473) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 20215340 + ... + 20216771.

It is an arithmetic number, because the mean of its divisors is an integer number (4245371760).

Almost surely, 2^28949391476 is an apocalyptic number.

It is an amenable number.

28949391476 is a deficient number, since it is larger than the sum of its proper divisors (21995069644).

28949391476 is a wasteful number, since it uses less digits than its factorization.

28949391476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40432294 (or 40432292 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 62.

The spelling of 28949391476 in words is "twenty-eight billion, nine hundred forty-nine million, three hundred ninety-one thousand, four hundred seventy-six".