1244445632 has 28 divisors (see below), whose sum is σ = 2477277240. Its totient is φ = 620249856.

The previous prime is 1244445607. The next prime is 1244445661. The reversal of 1244445632 is 2365444421.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1244445592 and 1244445601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10382 + ... + 50957.

Almost surely, 2^1244445632 is an apocalyptic number.

It is an amenable number.

1244445632 is a deficient number, since it is larger than the sum of its proper divisors (1232831608).

1244445632 is an equidigital number, since it uses as much as digits as its factorization.

1244445632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61668 (or 61658 counting only the distinct ones).

The product of its digits is 92160, while the sum is 35.

The square root of 1244445632 is about 35276.7009795417. The cubic root of 1244445632 is about 1075.6194394989.

The spelling of 1244445632 in words is "one billion, two hundred forty-four million, four hundred forty-five thousand, six hundred thirty-two".