7028233840 has 160 divisors (see below), whose sum is σ = 17649156096. Its totient is φ = 2593443840.

The previous prime is 7028233819. The next prime is 7028233841. The reversal of 7028233840 is 483328207.

It is a happy number.

It is a super-2 number, since 2×7028233840² = 98792141819442291200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7028233840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7028233841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18350289 + ... + 18350671.

Almost surely, 2^7028233840 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 7028233840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8824578048).

7028233840 is an abundant number, since it is smaller than the sum of its proper divisors (10620922256).

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

7028233840 is a wasteful number, since it uses less digits than its factorization.

7028233840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647 (or 641 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 7028233840 is about 83834.5623236622. The cubic root of 7028233840 is about 1915.4996085481.

The spelling of 7028233840 in words is "seven billion, twenty-eight million, two hundred thirty-three thousand, eight hundred forty".