7898065920 has 704 divisors, whose sum is σ = 30813081600. Its totient is φ = 1911029760.

The previous prime is 7898065919. The next prime is 7898065997. The reversal of 7898065920 is 295608987.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 81423312 + ... + 81423408.

Almost surely, 2^7898065920 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 7898065920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15406540800).

7898065920 is an abundant number, since it is smaller than the sum of its proper divisors (22915015680).

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

7898065920 is a wasteful number, since it uses less digits than its factorization.

7898065920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The square root of 7898065920 is about 88871.0634571231. The cubic root of 7898065920 is about 1991.4691574321.

The spelling of 7898065920 in words is "seven billion, eight hundred ninety-eight million, sixty-five thousand, nine hundred twenty".