145504436 has 72 divisors (see below), whose sum is σ = 325149888. Its totient is φ = 55756800.

The previous prime is 145504379. The next prime is 145504439. The reversal of 145504436 is 634405541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145504439) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 226676 + ... + 227316.

Almost surely, 2^145504436 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 145504436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162574944).

145504436 is an abundant number, since it is smaller than the sum of its proper divisors (179645452).

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

145504436 is a wasteful number, since it uses less digits than its factorization.

145504436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741 (or 728 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 145504436 is about 12062.5219585292. The cubic root of 145504436 is about 525.9673002751.

Adding to 145504436 its reverse (634405541), we get a palindrome (779909977).

The spelling of 145504436 in words is "one hundred forty-five million, five hundred four thousand, four hundred thirty-six".