4171287920 has 20 divisors (see below), whose sum is σ = 9698244600. Its totient is φ = 1668515136.

The previous prime is 4171287919. The next prime is 4171287931. The reversal of 4171287920 is 297821714.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26070470 + ... + 26070629.

It is an arithmetic number, because the mean of its divisors is an integer number (484912230).

Almost surely, 2^4171287920 is an apocalyptic number.

4171287920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4171287920 is an abundant number, since it is smaller than the sum of its proper divisors (5526956680).

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

4171287920 is a wasteful number, since it uses less digits than its factorization.

4171287920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52141112 (or 52141106 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 4171287920 is about 64585.5085913241. The cubic root of 4171287920 is about 1609.7436573473.

The spelling of 4171287920 in words is "four billion, one hundred seventy-one million, two hundred eighty-seven thousand, nine hundred twenty".