1297362444 has 96 divisors (see below), whose sum is σ = 3591974400. Its totient is φ = 356590080.

The previous prime is 1297362433. The next prime is 1297362491. The reversal of 1297362444 is 4442637921.

It is a super-2 number, since 2×1297362444² = 3366298622203306272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 1297362396 and 1297362405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 805512 + ... + 807120.

It is an arithmetic number, because the mean of its divisors is an integer number (37416400).

Almost surely, 2^1297362444 is an apocalyptic number.

1297362444 is a gapful number since it is divisible by the number (14) 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 1297362444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1795987200).

1297362444 is an abundant number, since it is smaller than the sum of its proper divisors (2294611956).

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

1297362444 is a wasteful number, since it uses less digits than its factorization.

1297362444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1983 (or 1981 counting only the distinct ones).

The product of its digits is 290304, while the sum is 42.

The square root of 1297362444 is about 36018.9178627010. The cubic root of 1297362444 is about 1090.6542782309.

The spelling of 1297362444 in words is "one billion, two hundred ninety-seven million, three hundred sixty-two thousand, four hundred forty-four".