1244219256 has 192 divisors, whose sum is σ = 4292870400. Its totient is φ = 316929024.

The previous prime is 1244219231. The next prime is 1244219281. The reversal of 1244219256 is 6529124421.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1244219231) and next prime (1244219281).

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

It is a self number, because there is not a number n which added to its sum of digits gives 1244219256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 158971 + ... + 166613.

It is an arithmetic number, because the mean of its divisors is an integer number (22358700).

Almost surely, 2^1244219256 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 1244219256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2146435200).

1244219256 is an abundant number, since it is smaller than the sum of its proper divisors (3048651144).

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

1244219256 is a wasteful number, since it uses less digits than its factorization.

1244219256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7698 (or 7691 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 1244219256 is about 35273.4922569342. The cubic root of 1244219256 is about 1075.5542138846.

The spelling of 1244219256 in words is "one billion, two hundred forty-four million, two hundred nineteen thousand, two hundred fifty-six".