745115400 has 144 divisors (see below), whose sum is σ = 2634169200. Its totient is φ = 188231040.

The previous prime is 745115369. The next prime is 745115401. The reversal of 745115400 is 4511547.

It is a happy number.

745115400 is a `hidden beast` number, since 74 + 51 + 1 + 540 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (745115401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 23307 + ... + 45093.

Almost surely, 2^745115400 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 745115400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1317084600).

745115400 is an abundant number, since it is smaller than the sum of its proper divisors (1889053800).

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

745115400 is a wasteful number, since it uses less digits than its factorization.

745115400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21828 (or 21816 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 745115400 is about 27296.8020104920. The cubic root of 745115400 is about 906.5835750218.

Adding to 745115400 its reverse (4511547), we get a palindrome (749626947).

The spelling of 745115400 in words is "seven hundred forty-five million, one hundred fifteen thousand, four hundred".