72193995 has 12 divisors (see below), whose sum is σ = 125136336. Its totient is φ = 38503440.

The previous prime is 72193973. The next prime is 72194027. The reversal of 72193995 is 59939127.

It is a happy number.

It is not a de Polignac number, because 72193995 - 2¹⁰ = 72192971 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1604311 = 72193995 / (7 + 2 + 1 + 9 + 3 + 9 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 72193995.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 802111 + ... + 802200.

It is an arithmetic number, because the mean of its divisors is an integer number (10428028).

Almost surely, 2^72193995 is an apocalyptic number.

72193995 is a deficient number, since it is larger than the sum of its proper divisors (52942341).

72193995 is a wasteful number, since it uses less digits than its factorization.

72193995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604322 (or 1604319 counting only the distinct ones).

The product of its digits is 153090, while the sum is 45.

The square root of 72193995 is about 8496.7049495672. The cubic root of 72193995 is about 416.3900645975.

The spelling of 72193995 in words is "seventy-two million, one hundred ninety-three thousand, nine hundred ninety-five".