1210730840 has 64 divisors (see below), whose sum is σ = 2996485920. Its totient is φ = 440246400.

The previous prime is 1210730839. The next prime is 1210730869. The reversal of 1210730840 is 480370121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41870 + ... + 64610.

Almost surely, 2^1210730840 is an apocalyptic number.

1210730840 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 1210730840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1498242960).

1210730840 is an abundant number, since it is smaller than the sum of its proper divisors (1785755080).

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

1210730840 is a wasteful number, since it uses less digits than its factorization.

1210730840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22785 (or 22759 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 1210730840 is about 34795.5577624501. The cubic root of 1210730840 is about 1065.8167348371.

The spelling of 1210730840 in words is "one billion, two hundred ten million, seven hundred thirty thousand, eight hundred forty".