28216202139 has 12 divisors (see below), whose sum is σ = 42071470272. Its totient is φ = 18204001200.

The previous prime is 28216202101. The next prime is 28216202143. The reversal of 28216202139 is 93120261282.

It is a happy number.

28216202139 is a `hidden beast` number, since 2 + 8 + 2 + 1 + 620 + 21 + 3 + 9 = 666.

It is not a de Polignac number, because 28216202139 - 2¹¹ = 28216200091 is a prime.

It is a super-3 number, since 3×28216202139³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (28216207139) 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 11 ways as a sum of consecutive naturals, for example, 50566392 + ... + 50566949.

It is an arithmetic number, because the mean of its divisors is an integer number (3505955856).

Almost surely, 2^28216202139 is an apocalyptic number.

28216202139 is a deficient number, since it is larger than the sum of its proper divisors (13855268133).

28216202139 is a wasteful number, since it uses less digits than its factorization.

28216202139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101133378 (or 101133375 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 28216202139 in words is "twenty-eight billion, two hundred sixteen million, two hundred two thousand, one hundred thirty-nine".