72705950 has 12 divisors (see below), whose sum is σ = 135233160. Its totient is φ = 29082360.

The previous prime is 72705947. The next prime is 72705953. The reversal of 72705950 is 5950727.

It is an interprime number because it is at equal distance from previous prime (72705947) and next prime (72705953).

It is a Curzon number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 72705950.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72705953) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 727010 + ... + 727109.

It is an arithmetic number, because the mean of its divisors is an integer number (11269430).

Almost surely, 2^72705950 is an apocalyptic number.

72705950 is a deficient number, since it is larger than the sum of its proper divisors (62527210).

72705950 is a wasteful number, since it uses less digits than its factorization.

72705950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454131 (or 1454126 counting only the distinct ones).

The product of its (nonzero) digits is 22050, while the sum is 35.

The square root of 72705950 is about 8526.7784068779. The cubic root of 72705950 is about 417.3720070918.

The spelling of 72705950 in words is "seventy-two million, seven hundred five thousand, nine hundred fifty".