738245257 has 4 divisors (see below), whose sum is σ = 763702020. Its totient is φ = 712788496.

The previous prime is 738245239. The next prime is 738245267. The reversal of 738245257 is 752542837.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 616826896 + 121418361 = 24836^2 + 11019^2 .

It is a cyclic number.

It is not a de Polignac number, because 738245257 - 2¹⁹ = 737720969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (738245267) 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, 12728338 + ... + 12728395.

It is an arithmetic number, because the mean of its divisors is an integer number (190925505).

Almost surely, 2^738245257 is an apocalyptic number.

It is an amenable number.

738245257 is a deficient number, since it is larger than the sum of its proper divisors (25456763).

738245257 is a wasteful number, since it uses less digits than its factorization.

738245257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25456762.

The product of its digits is 470400, while the sum is 43.

The square root of 738245257 is about 27170.6690569077. The cubic root of 738245257 is about 903.7886612925.

The spelling of 738245257 in words is "seven hundred thirty-eight million, two hundred forty-five thousand, two hundred fifty-seven".