7997000280 has 64 divisors (see below), whose sum is σ = 23997600000. Its totient is φ = 2131946880.

The previous prime is 7997000261. The next prime is 7997000339. The reversal of 7997000280 is 820007997.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 593215 + ... + 606545.

It is an arithmetic number, because the mean of its divisors is an integer number (374962500).

Almost surely, 2^7997000280 is an apocalyptic number.

It is an amenable number.

7997000280 is an abundant number, since it is smaller than the sum of its proper divisors (16000599720).

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

7997000280 is a wasteful number, since it uses less digits than its factorization.

7997000280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18344 (or 18340 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 7997000280 is about 89425.9485831713. The cubic root of 7997000280 is about 1999.7499920827.

The spelling of 7997000280 in words is "seven billion, nine hundred ninety-seven million, two hundred eighty", and thus it is an aban number.