745200 has 150 divisors (see below), whose sum is σ = 2790744. Its totient is φ = 190080.
The previous prime is 745189. The next prime is 745201. The reversal of 745200 is 2547.
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (150).
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (745201) by changing a digit.
745200 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 32389 + ... + 32411.
2745200 is an apocalyptic number.
745200 is the 432-nd decagonal number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 745200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1395372).
745200 is an abundant number, since it is smaller than the sum of its proper divisors (2045544).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
745200 is a wasteful number, since it uses less digits than its factorization.
745200 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 53 (or 33 counting only the distinct ones).
The product of its (nonzero) digits is 280, while the sum is 18.
The square root of 745200 is about 863.2496741963. The cubic root of 745200 is about 90.6617884726.
Adding to 745200 its reverse (2547), we get a palindrome (747747).
The spelling of 745200 in words is "seven hundred forty-five thousand, two hundred".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.072 sec. • engine limits •