1210398720 has 288 divisors, whose sum is σ = 4098865680. Its totient is φ = 304742400.

The previous prime is 1210398719. The next prime is 1210398727. The reversal of 1210398720 is 278930121.

It is a super-2 number, since 2×1210398720² = 2930130122755276800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210398727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29521900 + ... + 29521940.

Almost surely, 2^1210398720 is an apocalyptic number.

1210398720 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 1210398720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2049432840).

1210398720 is an abundant number, since it is smaller than the sum of its proper divisors (2888466960).

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

1210398720 is an equidigital number, since it uses as much as digits as its factorization.

1210398720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 1210398720 is about 34790.7849868324. The cubic root of 1210398720 is about 1065.7192698971.

The spelling of 1210398720 in words is "one billion, two hundred ten million, three hundred ninety-eight thousand, seven hundred twenty".