726405546 has 48 divisors (see below), whose sum is σ = 1550374560. Its totient is φ = 226848000.

The previous prime is 726405541. The next prime is 726405551. The reversal of 726405546 is 645504627.

It is an interprime number because it is at equal distance from previous prime (726405541) and next prime (726405551).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (726405541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 434400 + ... + 436068.

It is an arithmetic number, because the mean of its divisors is an integer number (32299470).

Almost surely, 2^726405546 is an apocalyptic number.

726405546 is an abundant number, since it is smaller than the sum of its proper divisors (823969014).

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

726405546 is a wasteful number, since it uses less digits than its factorization.

726405546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1959 (or 1942 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 39.

The square root of 726405546 is about 26951.9117318234. The cubic root of 726405546 is about 898.9310543541.

The spelling of 726405546 in words is "seven hundred twenty-six million, four hundred five thousand, five hundred forty-six".