1447992 has 144 divisors (see below), whose sum is σ = 5138640. Its totient is φ = 359424.

The previous prime is 1447987. The next prime is 1448003. The reversal of 1447992 is 2997441.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

Its product of digits (18144) is a multiple of the sum of its prime divisors (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 85168 + ... + 85184.

It is an arithmetic number, because the mean of its divisors is an integer number (35685).

2^1447992 is an apocalyptic number.

1447992 is a gapful number since it is divisible by the number (12) 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 1447992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2569320).

1447992 is an abundant number, since it is smaller than the sum of its proper divisors (3690648).

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

1447992 is a wasteful number, since it uses less digits than its factorization.

1447992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62 (or 42 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 1447992 is about 1203.3253924022. The cubic root of 1447992 is about 113.1328481679.

The spelling of 1447992 in words is "one million, four hundred forty-seven thousand, nine hundred ninety-two".