10642531728 has 20 divisors (see below), whose sum is σ = 27493207088. Its totient is φ = 3547510560.

The previous prime is 10642531727. The next prime is 10642531747. The reversal of 10642531728 is 82713524601.

It is a super-2 number, since 2×10642531728² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (10642531727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110859658 + ... + 110859753.

Almost surely, 2^10642531728 is an apocalyptic number.

It is an amenable number.

10642531728 is an abundant number, since it is smaller than the sum of its proper divisors (16850675360).

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

10642531728 is a wasteful number, since it uses less digits than its factorization.

10642531728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221719422 (or 221719416 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 10642531728 in words is "ten billion, six hundred forty-two million, five hundred thirty-one thousand, seven hundred twenty-eight".