726871740 has 96 divisors (see below), whose sum is σ = 2365493760. Its totient is φ = 163320576.

The previous prime is 726871687. The next prime is 726871751. The reversal of 726871740 is 47178627.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 726871692 and 726871701.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10114 + ... + 39446.

It is an arithmetic number, because the mean of its divisors is an integer number (24640560).

Almost surely, 2^726871740 is an apocalyptic number.

726871740 is a gapful number since it is divisible by the number (70) 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 726871740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1182746880).

726871740 is an abundant number, since it is smaller than the sum of its proper divisors (1638622020).

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

726871740 is a wasteful number, since it uses less digits than its factorization.

726871740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29411 (or 29409 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 42.

The square root of 726871740 is about 26960.5589704665. The cubic root of 726871740 is about 899.1233191509.

The spelling of 726871740 in words is "seven hundred twenty-six million, eight hundred seventy-one thousand, seven hundred forty".