1297408080 has 40 divisors (see below), whose sum is σ = 4021965792. Its totient is φ = 345975424.

The previous prime is 1297408067. The next prime is 1297408087. The reversal of 1297408080 is 808047921.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297408087) 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, 2702694 + ... + 2703173.

Almost surely, 2^1297408080 is an apocalyptic number.

1297408080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1297408080 is an abundant number, since it is smaller than the sum of its proper divisors (2724557712).

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

1297408080 is a wasteful number, since it uses less digits than its factorization.

1297408080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5405883 (or 5405877 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 1297408080 is about 36019.5513575614. The cubic root of 1297408080 is about 1090.6670663599.

The spelling of 1297408080 in words is "one billion, two hundred ninety-seven million, four hundred eight thousand, eighty".