28773556224 has 224 divisors, whose sum is σ = 92310996480. Its totient is φ = 7787446272.

The previous prime is 28773556171. The next prime is 28773556277. The reversal of 28773556224 is 42265537782.

It is an interprime number because it is at equal distance from previous prime (28773556171) and next prime (28773556277).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3264207 + ... + 3273009.

Almost surely, 2^28773556224 is an apocalyptic number.

28773556224 is a gapful number since it is divisible by the number (24) 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 28773556224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46155498240).

28773556224 is an abundant number, since it is smaller than the sum of its proper divisors (63537440256).

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

28773556224 is an equidigital number, since it uses as much as digits as its factorization.

28773556224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8858 (or 8834 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 51.

The spelling of 28773556224 in words is "twenty-eight billion, seven hundred seventy-three million, five hundred fifty-six thousand, two hundred twenty-four".