1298792880 has 800 divisors, whose sum is σ = 5963189760. Its totient is φ = 253808640.

The previous prime is 1298792851. The next prime is 1298792947. The reversal of 1298792880 is 882978921.

1298792880 is a `hidden beast` number, since 1 + 298 + 79 + 288 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 9480172 + ... + 9480308.

Almost surely, 2^1298792880 is an apocalyptic number.

1298792880 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 1298792880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2981594880).

1298792880 is an abundant number, since it is smaller than the sum of its proper divisors (4664396880).

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

1298792880 is a wasteful number, since it uses less digits than its factorization.

1298792880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 54.

The square root of 1298792880 is about 36038.7691243749. The cubic root of 1298792880 is about 1091.0549727638.

The spelling of 1298792880 in words is "one billion, two hundred ninety-eight million, seven hundred ninety-two thousand, eight hundred eighty".