281260128100 has 36 divisors (see below), whose sum is σ = 697525119424. Its totient is φ = 96432043680.

The previous prime is 281260128077. The next prime is 281260128143. The reversal of 281260128100 is 1821062182.

It is a super-2 number, since 2×281260128100² (a number of 24 digits) contains 22 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, 200899392 + ... + 200900791.

Almost surely, 2^281260128100 is an apocalyptic number.

281260128100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

281260128100 is an abundant number, since it is smaller than the sum of its proper divisors (416264991324).

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

281260128100 is a wasteful number, since it uses less digits than its factorization.

281260128100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401800204 (or 401800197 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The spelling of 281260128100 in words is "two hundred eighty-one billion, two hundred sixty million, one hundred twenty-eight thousand, one hundred".