8201297880 has 48 divisors (see below), whose sum is σ = 26654219280. Its totient is φ = 2187012672.

The previous prime is 8201297849. The next prime is 8201297899. The reversal of 8201297880 is 887921028.

It is a happy number.

It is a super-2 number, since 2×8201297880² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11390332 + ... + 11391051.

It is an arithmetic number, because the mean of its divisors is an integer number (555296235).

Almost surely, 2^8201297880 is an apocalyptic number.

It is an amenable number.

8201297880 is an abundant number, since it is smaller than the sum of its proper divisors (18452921400).

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

8201297880 is a wasteful number, since it uses less digits than its factorization.

8201297880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22781400 (or 22781393 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 8201297880 is about 90561.0174412810. The cubic root of 8201297880 is about 2016.6360603996.

The spelling of 8201297880 in words is "eight billion, two hundred one million, two hundred ninety-seven thousand, eight hundred eighty".