1249789296 has 120 divisors (see below), whose sum is σ = 3953556480. Its totient is φ = 338276736.

The previous prime is 1249789291. The next prime is 1249789337. The reversal of 1249789296 is 6929879421.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249789291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30705 + ... + 58671.

It is an arithmetic number, because the mean of its divisors is an integer number (32946304).

Almost surely, 2^1249789296 is an apocalyptic number.

1249789296 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 1249789296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1976778240).

1249789296 is an abundant number, since it is smaller than the sum of its proper divisors (2703767184).

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

1249789296 is a wasteful number, since it uses less digits than its factorization.

1249789296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28011 (or 27998 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 57.

The square root of 1249789296 is about 35352.3591292010. The cubic root of 1249789296 is about 1077.1568152139.

The spelling of 1249789296 in words is "one billion, two hundred forty-nine million, seven hundred eighty-nine thousand, two hundred ninety-six".