7122842628 has 144 divisors (see below), whose sum is σ = 18682444032. Its totient is φ = 2110046400.

The previous prime is 7122842591. The next prime is 7122842633. The reversal of 7122842628 is 8262482217.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 7122842628.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20526751 + ... + 20527097.

Almost surely, 2^7122842628 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 7122842628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9341222016).

7122842628 is an abundant number, since it is smaller than the sum of its proper divisors (11559601404).

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

7122842628 is a wasteful number, since it uses less digits than its factorization.

7122842628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654 (or 641 counting only the distinct ones).

The product of its digits is 172032, while the sum is 42.

The square root of 7122842628 is about 84396.9349443450. The cubic root of 7122842628 is about 1924.0563320312.

The spelling of 7122842628 in words is "seven billion, one hundred twenty-two million, eight hundred forty-two thousand, six hundred twenty-eight".