1206210630 has 128 divisors (see below), whose sum is σ = 3227558400. Its totient is φ = 287207424.

The previous prime is 1206210583. The next prime is 1206210641. The reversal of 1206210630 is 360126021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1206210597 and 1206210606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 709942 + ... + 711638.

It is an arithmetic number, because the mean of its divisors is an integer number (25215300).

Almost surely, 2^1206210630 is an apocalyptic number.

1206210630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1206210630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1613779200).

1206210630 is an abundant number, since it is smaller than the sum of its proper divisors (2021347770).

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

1206210630 is a wasteful number, since it uses less digits than its factorization.

1206210630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1206210630 is about 34730.5431860776. The cubic root of 1206210630 is about 1064.4886875272.

Adding to 1206210630 its reverse (360126021), we get a palindrome (1566336651).

The spelling of 1206210630 in words is "one billion, two hundred six million, two hundred ten thousand, six hundred thirty".