28738977926 has 8 divisors (see below), whose sum is σ = 43119047520. Its totient is φ = 14365962088.

The previous prime is 28738977859. The next prime is 28738978013. The reversal of 28738977926 is 62977983782.

It is a happy number.

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

It is a super-2 number, since 2×28738977926² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1753241 + ... + 1769556.

It is an arithmetic number, because the mean of its divisors is an integer number (5389880940).

Almost surely, 2^28738977926 is an apocalyptic number.

28738977926 is a deficient number, since it is larger than the sum of its proper divisors (14380069594).

28738977926 is a wasteful number, since it uses less digits than its factorization.

28738977926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3526878.

The product of its digits is 128024064, while the sum is 68.

The spelling of 28738977926 in words is "twenty-eight billion, seven hundred thirty-eight million, nine hundred seventy-seven thousand, nine hundred twenty-six".