281944434 has 16 divisors (see below), whose sum is σ = 564069888. Its totient is φ = 93951312.

The previous prime is 281944433. The next prime is 281944451. The reversal of 281944434 is 434449182.

It is a junction number, because it is equal to n+sod(n) for n = 281944392 and 281944401.

It is not an unprimeable number, because it can be changed into a prime (281944433) 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, 21039 + ... + 31725.

It is an arithmetic number, because the mean of its divisors is an integer number (35254368).

Almost surely, 2^281944434 is an apocalyptic number.

281944434 is an abundant number, since it is smaller than the sum of its proper divisors (282125454).

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

281944434 is a wasteful number, since it uses less digits than its factorization.

281944434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15089.

The product of its digits is 110592, while the sum is 39.

The square root of 281944434 is about 16791.2010886655. The cubic root of 281944434 is about 655.7241444387.

The spelling of 281944434 in words is "two hundred eighty-one million, nine hundred forty-four thousand, four hundred thirty-four".