1297049920 has 112 divisors (see below), whose sum is σ = 3249704448. Its totient is φ = 492410880.

The previous prime is 1297049909. The next prime is 1297049921. The reversal of 1297049920 is 299407921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297049921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 524527 + ... + 526993.

Almost surely, 2^1297049920 is an apocalyptic number.

1297049920 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 1297049920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1624852224).

1297049920 is an abundant number, since it is smaller than the sum of its proper divisors (1952654528).

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

1297049920 is a wasteful number, since it uses less digits than its factorization.

1297049920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568 (or 2558 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 1297049920 is about 36014.5792700678. The cubic root of 1297049920 is about 1090.5666946332.

The spelling of 1297049920 in words is "one billion, two hundred ninety-seven million, forty-nine thousand, nine hundred twenty".