8019977240 has 64 divisors (see below), whose sum is σ = 19714959360. Its totient is φ = 2911976320.

The previous prime is 8019977237. The next prime is 8019977263. The reversal of 8019977240 is 427799108.

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, 287177 + ... + 313863.

It is an arithmetic number, because the mean of its divisors is an integer number (308046240).

Almost surely, 2^8019977240 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 8019977240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9857479680).

8019977240 is an abundant number, since it is smaller than the sum of its proper divisors (11694982120).

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

8019977240 is a wasteful number, since it uses less digits than its factorization.

8019977240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27392 (or 27388 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 47.

The square root of 8019977240 is about 89554.3256353371. The cubic root of 8019977240 is about 2001.6633861897.

The spelling of 8019977240 in words is "eight billion, nineteen million, nine hundred seventy-seven thousand, two hundred forty".