281000002 has 16 divisors (see below), whose sum is σ = 424035360. Its totient is φ = 139658112.

The previous prime is 280999973. The next prime is 281000003. The reversal of 281000002 is 200000182.

It is a super-2 number, since 2×281000002² = 157922002248000008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (281000003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436693 + ... + 437335.

It is an arithmetic number, because the mean of its divisors is an integer number (26502210).

Almost surely, 2^281000002 is an apocalyptic number.

281000002 is a deficient number, since it is larger than the sum of its proper divisors (143035358).

281000002 is a wasteful number, since it uses less digits than its factorization.

281000002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 281000002 is about 16763.0546738952. The cubic root of 281000002 is about 654.9911635659.

Adding to 281000002 its reverse (200000182), we get a palindrome (481000184).

The spelling of 281000002 in words is "two hundred eighty-one million, two", and thus it is an aban number.