1729342680 has 256 divisors, whose sum is σ = 6018364800. Its totient is φ = 393707520.

The previous prime is 1729342651. The next prime is 1729342691. The reversal of 1729342680 is 862439271.

1729342680 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1729342680² = 5981252209739164800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1617186 + ... + 1618254.

Almost surely, 2^1729342680 is an apocalyptic number.

1729342680 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 1729342680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3009182400).

1729342680 is an abundant number, since it is smaller than the sum of its proper divisors (4289022120).

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

1729342680 is a wasteful number, since it uses less digits than its factorization.

1729342680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174 (or 1170 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 1729342680 is about 41585.3661760961. The cubic root of 1729342680 is about 1200.3107250902.

The spelling of 1729342680 in words is "one billion, seven hundred twenty-nine million, three hundred forty-two thousand, six hundred eighty".