1244464672 has 72 divisors (see below), whose sum is σ = 2703936816. Its totient is φ = 563376000.

The previous prime is 1244464667. The next prime is 1244464687. The reversal of 1244464672 is 2764644421.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1281147 + ... + 1282117.

It is an arithmetic number, because the mean of its divisors is an integer number (37554678).

Almost surely, 2^1244464672 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 1244464672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1351968408).

1244464672 is an abundant number, since it is smaller than the sum of its proper divisors (1459472144).

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

1244464672 is a wasteful number, since it uses less digits than its factorization.

1244464672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334 (or 1315 counting only the distinct ones).

The product of its digits is 258048, while the sum is 40.

The square root of 1244464672 is about 35276.9708450145. The cubic root of 1244464672 is about 1075.6249251248.

The spelling of 1244464672 in words is "one billion, two hundred forty-four million, four hundred sixty-four thousand, six hundred seventy-two".