28491422047200 has 3456 divisors, whose sum is σ = 131122607616000. Its totient is φ = 6014570526720.

The previous prime is 28491422047189. The next prime is 28491422047211. The reversal of 28491422047200 is 274022419482.

28491422047200 is a `hidden beast` number, since 2 + 84 + 91 + 422 + 0 + 47 + 20 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (28491422047189) and next prime (28491422047211).

It is a super-2 number, since 2×28491422047200² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 54476906139 + ... + 54476906661.

Almost surely, 2^{28491422047200} is an apocalyptic number.

28491422047200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28491422047200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65561303808000).

28491422047200 is an abundant number, since it is smaller than the sum of its proper divisors (102631185568800).

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

28491422047200 is a wasteful number, since it uses less digits than its factorization.

28491422047200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641 (or 602 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The spelling of 28491422047200 in words is "twenty-eight trillion, four hundred ninety-one billion, four hundred twenty-two million, forty-seven thousand, two hundred".