1298926560 has 48 divisors (see below), whose sum is σ = 4091620176. Its totient is φ = 346380288.

The previous prime is 1298926553. The next prime is 1298926561. The reversal of 1298926560 is 656298921.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298926561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1352569 + ... + 1353528.

It is an arithmetic number, because the mean of its divisors is an integer number (85242087).

Almost surely, 2^1298926560 is an apocalyptic number.

1298926560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1298926560 is an abundant number, since it is smaller than the sum of its proper divisors (2792693616).

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

1298926560 is a wasteful number, since it uses less digits than its factorization.

1298926560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2706115 (or 2706107 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 1298926560 is about 36040.6237459897. The cubic root of 1298926560 is about 1091.0924042453.

The spelling of 1298926560 in words is "one billion, two hundred ninety-eight million, nine hundred twenty-six thousand, five hundred sixty".