28542269312 has 32 divisors (see below), whose sum is σ = 56916860880. Its totient is φ = 14257253376.

The previous prime is 28542269309. The next prime is 28542269321. The reversal of 28542269312 is 21396224582.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×28542269312² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24293 + ... + 240155.

Almost surely, 2^28542269312 is an apocalyptic number.

It is an amenable number.

28542269312 is a deficient number, since it is larger than the sum of its proper divisors (28374591568).

28542269312 is a wasteful number, since it uses less digits than its factorization.

28542269312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216910 (or 216898 counting only the distinct ones).

The product of its digits is 414720, while the sum is 44.

The spelling of 28542269312 in words is "twenty-eight billion, five hundred forty-two million, two hundred sixty-nine thousand, three hundred twelve".