1230397680 has 40 divisors (see below), whose sum is σ = 3814233552. Its totient is φ = 328105984.

The previous prime is 1230397669. The next prime is 1230397739. The reversal of 1230397680 is 867930321.

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

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2563089 + ... + 2563568.

Almost surely, 2^1230397680 is an apocalyptic number.

1230397680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230397680 is an abundant number, since it is smaller than the sum of its proper divisors (2583835872).

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

1230397680 is a wasteful number, since it uses less digits than its factorization.

1230397680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5126673 (or 5126667 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 1230397680 is about 35077.0249593662. The cubic root of 1230397680 is about 1071.5567290001.

The spelling of 1230397680 in words is "one billion, two hundred thirty million, three hundred ninety-seven thousand, six hundred eighty".