1298723244 has 288 divisors, whose sum is σ = 4054095360. Its totient is φ = 320044032.

The previous prime is 1298723219. The next prime is 1298723291. The reversal of 1298723244 is 4423278921.

1298723244 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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 = 1298723196 and 1298723205.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14592352 + ... + 14592440.

It is an arithmetic number, because the mean of its divisors is an integer number (14076720).

Almost surely, 2^1298723244 is an apocalyptic number.

1298723244 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 1298723244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2027047680).

1298723244 is an abundant number, since it is smaller than the sum of its proper divisors (2755372116).

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

1298723244 is a wasteful number, since it uses less digits than its factorization.

1298723244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 220 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 1298723244 is about 36037.8029851988. The cubic root of 1298723244 is about 1091.0354731030.

The spelling of 1298723244 in words is "one billion, two hundred ninety-eight million, seven hundred twenty-three thousand, two hundred forty-four".