281288604252 has 24 divisors (see below), whose sum is σ = 656385868432. Its totient is φ = 93756326400.

The previous prime is 281288604227. The next prime is 281288604293. The reversal of 281288604252 is 252406882182.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 636949 + ... + 984012.

Almost surely, 2^281288604252 is an apocalyptic number.

It is an amenable number.

281288604252 is an abundant number, since it is smaller than the sum of its proper divisors (375097264180).

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

281288604252 is a wasteful number, since it uses less digits than its factorization.

281288604252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635429 (or 1635427 counting only the distinct ones).

The product of its (nonzero) digits is 983040, while the sum is 48.

The spelling of 281288604252 in words is "two hundred eighty-one billion, two hundred eighty-eight million, six hundred four thousand, two hundred fifty-two".