8211419720 has 32 divisors (see below), whose sum is σ = 21115080000. Its totient is φ = 2815343808.

The previous prime is 8211419719. The next prime is 8211419737. The reversal of 8211419720 is 279141128.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14662970 + ... + 14663529.

It is an arithmetic number, because the mean of its divisors is an integer number (659846250).

Almost surely, 2^8211419720 is an apocalyptic number.

It is an amenable number.

8211419720 is an abundant number, since it is smaller than the sum of its proper divisors (12903660280).

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

8211419720 is a wasteful number, since it uses less digits than its factorization.

8211419720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29326517 (or 29326513 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 8211419720 is about 90616.8842986780. The cubic root of 8211419720 is about 2017.4653468628.

The spelling of 8211419720 in words is "eight billion, two hundred eleven million, four hundred nineteen thousand, seven hundred twenty".