281048402 has 8 divisors (see below), whose sum is σ = 425303676. Its totient is φ = 139280512.

The previous prime is 281048381. The next prime is 281048423. The reversal of 281048402 is 204840182.

It is an interprime number because it is at equal distance from previous prime (281048381) and next prime (281048423).

It can be written as a sum of positive squares in 2 ways, for example, as 161823841 + 119224561 = 12721^2 + 10919^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 621563 + ... + 622014.

Almost surely, 2^281048402 is an apocalyptic number.

281048402 is a deficient number, since it is larger than the sum of its proper divisors (144255274).

281048402 is a wasteful number, since it uses less digits than its factorization.

281048402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243692.

The product of its (nonzero) digits is 4096, while the sum is 29.

The square root of 281048402 is about 16764.4982626979. The cubic root of 281048402 is about 655.0287670678.

Adding to 281048402 its reverse (204840182), we get a palindrome (485888584).

The spelling of 281048402 in words is "two hundred eighty-one million, forty-eight thousand, four hundred two".