1244157696 has 216 divisors, whose sum is σ = 3827962320. Its totient is φ = 387514368.

The previous prime is 1244157679. The next prime is 1244157749. The reversal of 1244157696 is 6967514421.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4246126 + ... + 4246418.

Almost surely, 2^1244157696 is an apocalyptic number.

1244157696 is a gapful number since it is divisible by the number (16) 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 1244157696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1913981160).

1244157696 is an abundant number, since it is smaller than the sum of its proper divisors (2583804624).

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

1244157696 is a wasteful number, since it uses less digits than its factorization.

1244157696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 414 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 1244157696 is about 35272.6196361994. The cubic root of 1244157696 is about 1075.5364752615.

The spelling of 1244157696 in words is "one billion, two hundred forty-four million, one hundred fifty-seven thousand, six hundred ninety-six".