28330998184 has 8 divisors (see below), whose sum is σ = 53120621610. Its totient is φ = 14165499088.

The previous prime is 28330998139. The next prime is 28330998193. The reversal of 28330998184 is 48189903382.

It can be written as a sum of positive squares in only one way, i.e., 28321524100 + 9474084 = 168290^2 + 3078^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×28330998184² (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, 1770687379 + ... + 1770687394.

Almost surely, 2^28330998184 is an apocalyptic number.

It is an amenable number.

28330998184 is a deficient number, since it is larger than the sum of its proper divisors (24789623426).

28330998184 is a wasteful number, since it uses less digits than its factorization.

28330998184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3541374779 (or 3541374775 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 55.

The spelling of 28330998184 in words is "twenty-eight billion, three hundred thirty million, nine hundred ninety-eight thousand, one hundred eighty-four".