28907516402 has 16 divisors (see below), whose sum is σ = 43561809720. Its totient is φ = 14386954752.

The previous prime is 28907516369. The next prime is 28907516413. The reversal of 28907516402 is 20461570982.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5584423441 + 23323092961 = 74729^2 + 152719^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1703174 + ... + 1720062.

Almost surely, 2^28907516402 is an apocalyptic number.

28907516402 is a deficient number, since it is larger than the sum of its proper divisors (14654293318).

28907516402 is a wasteful number, since it uses less digits than its factorization.

28907516402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20797.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 28907516402 in words is "twenty-eight billion, nine hundred seven million, five hundred sixteen thousand, four hundred two".