72293741 has 16 divisors (see below), whose sum is σ = 82749744. Its totient is φ = 62567424.

The previous prime is 72293731. The next prime is 72293777. The reversal of 72293741 is 14739227.

It can be written as a sum of positive squares in 8 ways, for example, as 1901641 + 70392100 = 1379^2 + 8390^2 .

It is a cyclic number.

It is not a de Polignac number, because 72293741 - 2⁶ = 72293677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72293731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81995 + ... + 82871.

It is an arithmetic number, because the mean of its divisors is an integer number (5171859).

Almost surely, 2^72293741 is an apocalyptic number.

It is an amenable number.

72293741 is a deficient number, since it is larger than the sum of its proper divisors (10456003).

72293741 is a wasteful number, since it uses less digits than its factorization.

72293741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280.

The product of its digits is 21168, while the sum is 35.

The square root of 72293741 is about 8502.5726106867. The cubic root of 72293741 is about 416.5817431902.

The spelling of 72293741 in words is "seventy-two million, two hundred ninety-three thousand, seven hundred forty-one".