1213207632 has 360 divisors, whose sum is σ = 4373497856. Its totient is φ = 317447424.

The previous prime is 1213207631. The next prime is 1213207687. The reversal of 1213207632 is 2367023121.

1213207632 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 20 + 7 + 632 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1213207596 and 1213207605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213207631) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9552753 + ... + 9552879.

Almost surely, 2^1213207632 is an apocalyptic number.

1213207632 is a gapful number since it is divisible by the number (12) 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 1213207632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2186748928).

1213207632 is an abundant number, since it is smaller than the sum of its proper divisors (3160290224).

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

1213207632 is an equidigital number, since it uses as much as digits as its factorization.

1213207632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 1213207632 is about 34831.1302142207. The cubic root of 1213207632 is about 1066.5430202162.

The spelling of 1213207632 in words is "one billion, two hundred thirteen million, two hundred seven thousand, six hundred thirty-two".