726485840 has 40 divisors (see below), whose sum is σ = 1720959048. Its totient is φ = 285109760.

The previous prime is 726485839. The next prime is 726485857. The reversal of 726485840 is 48584627.

It can be written as a sum of positive squares in 4 ways, for example, as 50069776 + 676416064 = 7076^2 + 26008^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 726485791 and 726485800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81431 + ... + 89910.

Almost surely, 2^726485840 is an apocalyptic number.

It is an amenable number.

726485840 is an abundant number, since it is smaller than the sum of its proper divisors (994473208).

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

726485840 is a wasteful number, since it uses less digits than its factorization.

726485840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171407 (or 171401 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 44.

The square root of 726485840 is about 26953.4012695986. The cubic root of 726485840 is about 898.9641745632.

The spelling of 726485840 in words is "seven hundred twenty-six million, four hundred eighty-five thousand, eight hundred forty".