1298772360 has 256 divisors, whose sum is σ = 4596480000. Its totient is φ = 325285632.

The previous prime is 1298772329. The next prime is 1298772361. The reversal of 1298772360 is 632778921.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1298772361) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3426651 + ... + 3427029.

It is an arithmetic number, because the mean of its divisors is an integer number (17955000).

Almost surely, 2^1298772360 is an apocalyptic number.

1298772360 is a gapful number since it is divisible by the number (10) 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 1298772360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2298240000).

1298772360 is an abundant number, since it is smaller than the sum of its proper divisors (3297707640).

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

1298772360 is a wasteful number, since it uses less digits than its factorization.

1298772360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585 (or 575 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 1298772360 is about 36038.4844298425. The cubic root of 1298772360 is about 1091.0492267704.

The spelling of 1298772360 in words is "one billion, two hundred ninety-eight million, seven hundred seventy-two thousand, three hundred sixty".