7212638448 has 120 divisors (see below), whose sum is σ = 21268495872. Its totient is φ = 2277247104.

The previous prime is 7212638441. The next prime is 7212638449. The reversal of 7212638448 is 8448362127.

It is a happy number.

7212638448 is a `hidden beast` number, since 7 + 2 + 1 + 2 + 638 + 4 + 4 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7212638441) 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, 330565 + ... + 351707.

Almost surely, 2^7212638448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7212638448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10634247936).

7212638448 is an abundant number, since it is smaller than the sum of its proper divisors (14055857424).

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

7212638448 is a wasteful number, since it uses less digits than its factorization.

7212638448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21283 (or 21274 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 7212638448 is about 84927.2538588173. The cubic root of 7212638448 is about 1932.1079501942.

The spelling of 7212638448 in words is "seven billion, two hundred twelve million, six hundred thirty-eight thousand, four hundred forty-eight".