7229988640 has 192 divisors, whose sum is σ = 20536104960. Its totient is φ = 2353029120.

The previous prime is 7229988617. The next prime is 7229988677. The reversal of 7229988640 is 468899227.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1838196 + ... + 1842124.

It is an arithmetic number, because the mean of its divisors is an integer number (106958880).

Almost surely, 2^7229988640 is an apocalyptic number.

7229988640 is a gapful number since it is divisible by the number (70) 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 7229988640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10268052480).

7229988640 is an abundant number, since it is smaller than the sum of its proper divisors (13306116320).

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

7229988640 is a wasteful number, since it uses less digits than its factorization.

7229988640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4035 (or 4027 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 55.

The square root of 7229988640 is about 85029.3398774799. The cubic root of 7229988640 is about 1933.6559551440.

The spelling of 7229988640 in words is "seven billion, two hundred twenty-nine million, nine hundred eighty-eight thousand, six hundred forty".