2101776420 has 48 divisors (see below), whose sum is σ = 5892280128. Its totient is φ = 559777920.

The previous prime is 2101776407. The next prime is 2101776431. The reversal of 2101776420 is 246771012.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27927 + ... + 70593.

It is an arithmetic number, because the mean of its divisors is an integer number (122755836).

Almost surely, 2^2101776420 is an apocalyptic number.

2101776420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101776420 is an abundant number, since it is smaller than the sum of its proper divisors (3790503708).

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

2101776420 is a wasteful number, since it uses less digits than its factorization.

2101776420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43500 (or 43498 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 2101776420 is about 45845.1351835721. The cubic root of 2101776420 is about 1280.9401499557.

The spelling of 2101776420 in words is "two billion, one hundred one million, seven hundred seventy-six thousand, four hundred twenty".