281971972 has 24 divisors (see below), whose sum is σ = 497064960. Its totient is φ = 139958400.

The previous prime is 281971967. The next prime is 281971993. The reversal of 281971972 is 279179182.

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 7 ways as a sum of consecutive naturals, for example, 588429 + ... + 588907.

It is an arithmetic number, because the mean of its divisors is an integer number (20711040).

Almost surely, 2^281971972 is an apocalyptic number.

It is an amenable number.

281971972 is a deficient number, since it is larger than the sum of its proper divisors (215092988).

281971972 is a wasteful number, since it uses less digits than its factorization.

281971972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251 (or 1249 counting only the distinct ones).

The product of its digits is 127008, while the sum is 46.

The square root of 281971972 is about 16792.0210814541. The cubic root of 281971972 is about 655.7454923137.

The spelling of 281971972 in words is "two hundred eighty-one million, nine hundred seventy-one thousand, nine hundred seventy-two".