1249262238 has 64 divisors (see below), whose sum is σ = 3029142528. Its totient is φ = 335301120.

The previous prime is 1249262197. The next prime is 1249262281. The reversal of 1249262238 is 8322629421.

It is a super-2 number, since 2×1249262238² = 3121312278585537288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1249262196 and 1249262205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 470631 + ... + 473277.

It is an arithmetic number, because the mean of its divisors is an integer number (47330352).

Almost surely, 2^1249262238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1249262238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1514571264).

1249262238 is an abundant number, since it is smaller than the sum of its proper divisors (1779880290).

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

1249262238 is a wasteful number, since it uses less digits than its factorization.

1249262238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3337.

The product of its digits is 82944, while the sum is 39.

The square root of 1249262238 is about 35344.9039891184. The cubic root of 1249262238 is about 1077.0053753022.

The spelling of 1249262238 in words is "one billion, two hundred forty-nine million, two hundred sixty-two thousand, two hundred thirty-eight".