7021228032 has 702 divisors, whose sum is σ = 26657380152. Its totient is φ = 1771241472.

The previous prime is 7021228031. The next prime is 7021228043. The reversal of 7021228032 is 2308221207.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 7021227987 and 7021228005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7021228031) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 305270773 + ... + 305270795.

It is an arithmetic number, because the mean of its divisors is an integer number (37973476).

Almost surely, 2^7021228032 is an apocalyptic number.

7021228032 is a gapful number since it is divisible by the number (72) 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 7021228032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13328690076).

7021228032 is an abundant number, since it is smaller than the sum of its proper divisors (19636152120).

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

7021228032 is a wasteful number, since it uses less digits than its factorization.

7021228032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93 (or 48 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 7021228032 is about 83792.7683753198. The cubic root of 7021228032 is about 1914.8629344233.

Adding to 7021228032 its reverse (2308221207), we get a palindrome (9329449239).

The spelling of 7021228032 in words is "seven billion, twenty-one million, two hundred twenty-eight thousand, thirty-two".