726374045 has 18 divisors (see below), whose sum is σ = 927246222. Its totient is φ = 546145536.

The previous prime is 726374029. The next prime is 726374069. The reversal of 726374045 is 540473627.

It can be written as a sum of positive squares in 9 ways, for example, as 217916644 + 508457401 = 14762^2 + 22549^2 .

It is not a de Polignac number, because 726374045 - 2⁴ = 726374029 is a prime.

It is a Duffinian number.

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 17 ways as a sum of consecutive naturals, for example, 1024151 + ... + 1024859.

It is an arithmetic number, because the mean of its divisors is an integer number (51513679).

Almost surely, 2^726374045 is an apocalyptic number.

It is an amenable number.

726374045 is a deficient number, since it is larger than the sum of its proper divisors (200872177).

726374045 is an frugal number, since it uses more digits than its factorization.

726374045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457 (or 731 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 38.

The square root of 726374045 is about 26951.3273328050. The cubic root of 726374045 is about 898.9180599432.

Multiplying 726374045 by its product of nonzero digits (141120), we get a square (102505905230400 = 10124520²).

The spelling of 726374045 in words is "seven hundred twenty-six million, three hundred seventy-four thousand, forty-five".