738281 has 4 divisors (see below), whose sum is σ = 740052. Its totient is φ = 736512.

The previous prime is 738263. The next prime is 738301. The reversal of 738281 is 182837.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 182837 = 19 ⋅9623.

It can be written as a sum of positive squares in 2 ways, for example, as 225625 + 512656 = 475^2 + 716^2 .

It is a cyclic number.

It is not a de Polignac number, because 738281 - 2⁶ = 738217 is a prime.

It is a super-2 number, since 2×738281² = 1090117669922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (738211) by changing a digit.

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, 125 + ... + 1221.

It is an arithmetic number, because the mean of its divisors is an integer number (185013).

2⁷³⁸²⁸¹ is an apocalyptic number.

It is an amenable number.

738281 is a deficient number, since it is larger than the sum of its proper divisors (1771).

738281 is a wasteful number, since it uses less digits than its factorization.

738281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770.

The product of its digits is 2688, while the sum is 29.

The square root of 738281 is about 859.2327973256. The cubic root of 738281 is about 90.3803247049.

The spelling of 738281 in words is "seven hundred thirty-eight thousand, two hundred eighty-one".