1450312440 has 64 divisors (see below), whose sum is σ = 4356214560. Its totient is φ = 386280960.

The previous prime is 1450312439. The next prime is 1450312477. The reversal of 1450312440 is 442130541.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1450312440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98350 + ... + 112130.

Almost surely, 2^1450312440 is an apocalyptic number.

1450312440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1450312440 is an abundant number, since it is smaller than the sum of its proper divisors (2905902120).

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

1450312440 is a wasteful number, since it uses less digits than its factorization.

1450312440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14672 (or 14668 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1450312440 is about 38082.9678465321. The cubic root of 1450312440 is about 1131.9324856620.

Adding to 1450312440 its reverse (442130541), we get a palindrome (1892442981).

The spelling of 1450312440 in words is "one billion, four hundred fifty million, three hundred twelve thousand, four hundred forty".