1445502540 has 24 divisors (see below), whose sum is σ = 4047407280. Its totient is φ = 385467328.

The previous prime is 1445502529. The next prime is 1445502559. The reversal of 1445502540 is 452055441.

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 = 1445502498 and 1445502507.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12045795 + ... + 12045914.

It is an arithmetic number, because the mean of its divisors is an integer number (168641970).

Almost surely, 2^1445502540 is an apocalyptic number.

1445502540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1445502540 is an abundant number, since it is smaller than the sum of its proper divisors (2601904740).

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

1445502540 is a wasteful number, since it uses less digits than its factorization.

1445502540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24091721 (or 24091719 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 1445502540 is about 38019.7651228936. The cubic root of 1445502540 is about 1130.6797643345.

Adding to 1445502540 its reverse (452055441), we get a palindrome (1897557981).

The spelling of 1445502540 in words is "one billion, four hundred forty-five million, five hundred two thousand, five hundred forty".