72356941 has 4 divisors (see below), whose sum is σ = 74312572. Its totient is φ = 70401312.

The previous prime is 72356939. The next prime is 72356953. The reversal of 72356941 is 14965327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14965327 = 13 ⋅1151179.

It can be written as a sum of positive squares in 2 ways, for example, as 31024900 + 41332041 = 5570^2 + 6429^2 .

It is a cyclic number.

It is not a de Polignac number, because 72356941 - 2¹ = 72356939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 1955593 = 72356941 / (7 + 2 + 3 + 5 + 6 + 9 + 4 + 1).

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 72356941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72356441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 977760 + ... + 977833.

It is an arithmetic number, because the mean of its divisors is an integer number (18578143).

Almost surely, 2^72356941 is an apocalyptic number.

It is an amenable number.

72356941 is a deficient number, since it is larger than the sum of its proper divisors (1955631).

72356941 is a wasteful number, since it uses less digits than its factorization.

72356941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955630.

The product of its digits is 45360, while the sum is 37.

The square root of 72356941 is about 8506.2883210011. The cubic root of 72356941 is about 416.7031013117.

The spelling of 72356941 in words is "seventy-two million, three hundred fifty-six thousand, nine hundred forty-one".