1445404500 has 240 divisors, whose sum is σ = 4780535760. Its totient is φ = 380160000.

The previous prime is 1445404487. The next prime is 1445404507. The reversal of 1445404500 is 54045441.

It can be written as a sum of positive squares in 8 ways, for example, as 249766416 + 1195638084 = 15804^2 + 34578^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445404507) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3604300 + ... + 3604700.

It is an arithmetic number, because the mean of its divisors is an integer number (19918899).

Almost surely, 2^1445404500 is an apocalyptic number.

1445404500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1445404500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2390267880).

1445404500 is an abundant number, since it is smaller than the sum of its proper divisors (3335131260).

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

1445404500 is a wasteful number, since it uses less digits than its factorization.

1445404500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521 (or 500 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 1445404500 is about 38018.4757716561. The cubic root of 1445404500 is about 1130.6542012870.

Adding to 1445404500 its reverse (54045441), we get a palindrome (1499449941).

The spelling of 1445404500 in words is "one billion, four hundred forty-five million, four hundred four thousand, five hundred".