745233240 has 32 divisors (see below), whose sum is σ = 2235700080. Its totient is φ = 198728832.

The previous prime is 745233191. The next prime is 745233241. The reversal of 745233240 is 42332547.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 745233198 and 745233207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745233241) 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, 3105019 + ... + 3105258.

Almost surely, 2^745233240 is an apocalyptic number.

It is an amenable number.

745233240 is an abundant number, since it is smaller than the sum of its proper divisors (1490466840).

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

745233240 is a wasteful number, since it uses less digits than its factorization.

745233240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6210291 (or 6210287 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 30.

The square root of 745233240 is about 27298.9604197669. The cubic root of 745233240 is about 906.6313645665.

Adding to 745233240 its reverse (42332547), we get a palindrome (787565787).

The spelling of 745233240 in words is "seven hundred forty-five million, two hundred thirty-three thousand, two hundred forty".