726026491 has 12 divisors (see below), whose sum is σ = 746629488. Its totient is φ = 705972624.

The previous prime is 726026467. The next prime is 726026507. The reversal of 726026491 is 194620627.

It is not a de Polignac number, because 726026491 - 2⁷ = 726026363 is a prime.

It is a super-2 number, since 2×726026491² = 1054228931267546162, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 726026491.

It is not an unprimeable number, because it can be changed into a prime (726026591) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 485541 + ... + 487033.

It is an arithmetic number, because the mean of its divisors is an integer number (62219124).

Almost surely, 2^726026491 is an apocalyptic number.

726026491 is a deficient number, since it is larger than the sum of its proper divisors (20602997).

726026491 is a wasteful number, since it uses less digits than its factorization.

726026491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842 (or 1799 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 726026491 is about 26944.8787527426. The cubic root of 726026491 is about 898.7746662321.

The spelling of 726026491 in words is "seven hundred twenty-six million, twenty-six thousand, four hundred ninety-one".