7212249036 has 72 divisors (see below), whose sum is σ = 18756991344. Its totient is φ = 2335703040.

The previous prime is 7212249019. The next prime is 7212249067. The reversal of 7212249036 is 6309422127.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155596 + ... + 196556.

Almost surely, 2^7212249036 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 7212249036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9378495672).

7212249036 is an abundant number, since it is smaller than the sum of its proper divisors (11544742308).

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

7212249036 is a wasteful number, since it uses less digits than its factorization.

7212249036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41111 (or 41106 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 7212249036 is about 84924.9612069384. The cubic root of 7212249036 is about 1932.0731779183.

The spelling of 7212249036 in words is "seven billion, two hundred twelve million, two hundred forty-nine thousand, thirty-six".