745233278 has 4 divisors (see below), whose sum is σ = 1117849920. Its totient is φ = 372616638.

The previous prime is 745233277. The next prime is 745233319. The reversal of 745233278 is 872332547.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 872332547 = 3109 ⋅280583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745233277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186308318 + ... + 186308321.

It is an arithmetic number, because the mean of its divisors is an integer number (279462480).

Almost surely, 2^745233278 is an apocalyptic number.

745233278 is a deficient number, since it is larger than the sum of its proper divisors (372616642).

745233278 is a wasteful number, since it uses less digits than its factorization.

745233278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372616641.

The product of its digits is 282240, while the sum is 41.

The square root of 745233278 is about 27298.9611157641. The cubic root of 745233278 is about 906.6313799764.

The spelling of 745233278 in words is "seven hundred forty-five million, two hundred thirty-three thousand, two hundred seventy-eight".