28433564393472 has 224 divisors, whose sum is σ = 96277097971200. Its totient is φ = 8123875098624.

The previous prime is 28433564393449. The next prime is 28433564393513. The reversal of 28433564393472 is 27439346533482.

28433564393472 is a `hidden beast` number, since 2 + 8 + 4 + 3 + 3 + 564 + 39 + 34 + 7 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (224).

It is a super-3 number, since 3×28433564393472³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7633972 + ... + 10730547.

Almost surely, 2^{28433564393472} is an apocalyptic number.

It is an amenable number.

28433564393472 is an abundant number, since it is smaller than the sum of its proper divisors (67843533577728).

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

28433564393472 is an equidigital number, since it uses as much as digits as its factorization.

28433564393472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18364561 (or 18364531 counting only the distinct ones).

The product of its digits is 313528320, while the sum is 63.

The spelling of 28433564393472 in words is "twenty-eight trillion, four hundred thirty-three billion, five hundred sixty-four million, three hundred ninety-three thousand, four hundred seventy-two".