1244792144 has 40 divisors (see below), whose sum is σ = 2600666880. Its totient is φ = 575251200.

The previous prime is 1244792123. The next prime is 1244792161. The reversal of 1244792144 is 4412974421.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 1244792098 and 1244792107.

It is a congruent number.

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, 37472 + ... + 62399.

It is an arithmetic number, because the mean of its divisors is an integer number (65016672).

Almost surely, 2^1244792144 is an apocalyptic number.

It is an amenable number.

1244792144 is an abundant number, since it is smaller than the sum of its proper divisors (1355874736).

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

1244792144 is a wasteful number, since it uses less digits than its factorization.

1244792144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99939 (or 99933 counting only the distinct ones).

The product of its digits is 64512, while the sum is 38.

The square root of 1244792144 is about 35281.6119813140. The cubic root of 1244792144 is about 1075.7192645255.

The spelling of 1244792144 in words is "one billion, two hundred forty-four million, seven hundred ninety-two thousand, one hundred forty-four".