72194 has 4 divisors (see below), whose sum is σ = 108294. Its totient is φ = 36096.

The previous prime is 72173. The next prime is 72211. The reversal of 72194 is 49127.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49127 = 13 ⋅3779.

It can be written as a sum of positive squares in only one way, i.e., 69169 + 3025 = 263^2 + 55^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 72194.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18047 + ... + 18050.

2⁷²¹⁹⁴ is an apocalyptic number.

72194 is a deficient number, since it is larger than the sum of its proper divisors (36100).

72194 is a wasteful number, since it uses less digits than its factorization.

72194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36099.

The product of its digits is 504, while the sum is 23.

The square root of 72194 is about 268.6894117750. The cubic root of 72194 is about 41.6390074210.

The spelling of 72194 in words is "seventy-two thousand, one hundred ninety-four".