745518306 has 32 divisors (see below), whose sum is σ = 1700189568. Its totient is φ = 215896320.

The previous prime is 745518281. The next prime is 745518307. The reversal of 745518306 is 603815547.

It is a super-2 number, since 2×745518306² = 1111595089162219272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (745518307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279790 + ... + 282441.

It is an arithmetic number, because the mean of its divisors is an integer number (53130924).

Almost surely, 2^745518306 is an apocalyptic number.

745518306 is an abundant number, since it is smaller than the sum of its proper divisors (954671262).

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

745518306 is a wasteful number, since it uses less digits than its factorization.

745518306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562266.

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 745518306 is about 27304.1811083944. The cubic root of 745518306 is about 906.7469511219.

The spelling of 745518306 in words is "seven hundred forty-five million, five hundred eighteen thousand, three hundred six".