1297834020 has 72 divisors (see below), whose sum is σ = 4499162304. Its totient is φ = 296647488.

The previous prime is 1297834001. The next prime is 1297834037. The reversal of 1297834020 is 204387921.

1297834020 is a `hidden beast` number, since 1 + 297 + 8 + 340 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 513754 + ... + 516273.

Almost surely, 2^1297834020 is an apocalyptic number.

1297834020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1297834020 is an abundant number, since it is smaller than the sum of its proper divisors (3201328284).

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

1297834020 is a wasteful number, since it uses less digits than its factorization.

1297834020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030049 (or 1030044 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 1297834020 is about 36025.4634945895. The cubic root of 1297834020 is about 1090.7864088933.

The spelling of 1297834020 in words is "one billion, two hundred ninety-seven million, eight hundred thirty-four thousand, twenty".