28906959106 has 4 divisors (see below), whose sum is σ = 43360438662. Its totient is φ = 14453479552.

The previous prime is 28906959049. The next prime is 28906959121. The reversal of 28906959106 is 60195960982.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 28524169881 + 382789225 = 168891^2 + 19565^2 .

It is a super-2 number, since 2×28906959106² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7226739775 + ... + 7226739778.

Almost surely, 2^28906959106 is an apocalyptic number.

28906959106 is a deficient number, since it is larger than the sum of its proper divisors (14453479556).

28906959106 is a wasteful number, since it uses less digits than its factorization.

28906959106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14453479555.

The product of its (nonzero) digits is 2099520, while the sum is 55.

The spelling of 28906959106 in words is "twenty-eight billion, nine hundred six million, nine hundred fifty-nine thousand, one hundred six".