28238477600 has 72 divisors (see below), whose sum is σ = 68962656420. Its totient is φ = 11291217920.

The previous prime is 28238477591. The next prime is 28238477621. The reversal of 28238477600 is 677483282.

It can be written as a sum of positive squares in 6 ways, for example, as 2475659536 + 25762818064 = 49756^2 + 160508^2 .

It is a super-3 number, since 3×28238477600³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3061796 + ... + 3071004.

Almost surely, 2^28238477600 is an apocalyptic number.

28238477600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28238477600 is an abundant number, since it is smaller than the sum of its proper divisors (40724178820).

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

28238477600 is a wasteful number, since it uses less digits than its factorization.

28238477600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13062 (or 13049 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 47.

The spelling of 28238477600 in words is "twenty-eight billion, two hundred thirty-eight million, four hundred seventy-seven thousand, six hundred".