28695648402 has 48 divisors (see below), whose sum is σ = 63913494528. Its totient is φ = 9301279680.

The previous prime is 28695648367. The next prime is 28695648407. The reversal of 28695648402 is 20484659682.

It is a super-2 number, since 2×28695648402² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28695648407) 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 23 ways as a sum of consecutive naturals, for example, 60498 + ... + 247085.

It is an arithmetic number, because the mean of its divisors is an integer number (1331531136).

Almost surely, 2^28695648402 is an apocalyptic number.

28695648402 is an abundant number, since it is smaller than the sum of its proper divisors (35217846126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28695648402 is a wasteful number, since it uses less digits than its factorization.

28695648402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307735 (or 307732 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 54.

The spelling of 28695648402 in words is "twenty-eight billion, six hundred ninety-five million, six hundred forty-eight thousand, four hundred two".