1716872840 has 64 divisors (see below), whose sum is σ = 4132522800. Its totient is φ = 639664128.

The previous prime is 1716872791. The next prime is 1716872867. The reversal of 1716872840 is 482786171.

It can be written as a sum of positive squares in 8 ways, for example, as 461304484 + 1255568356 = 21478^2 + 35434^2 .

It is a zygodrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1716872791 and 1716872800.

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, 52946 + ... + 78974.

Almost surely, 2^1716872840 is an apocalyptic number.

1716872840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1716872840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2066261400).

1716872840 is an abundant number, since it is smaller than the sum of its proper divisors (2415649960).

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

1716872840 is a wasteful number, since it uses less digits than its factorization.

1716872840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26154 (or 26150 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 44.

The square root of 1716872840 is about 41435.1642931460. The cubic root of 1716872840 is about 1197.4187199944.

The spelling of 1716872840 in words is "one billion, seven hundred sixteen million, eight hundred seventy-two thousand, eight hundred forty".