72195958 has 4 divisors (see below), whose sum is σ = 108293940. Its totient is φ = 36097978.

The previous prime is 72195943. The next prime is 72195961. The reversal of 72195958 is 85959127.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18048988 + ... + 18048991.

It is an arithmetic number, because the mean of its divisors is an integer number (27073485).

Almost surely, 2^72195958 is an apocalyptic number.

72195958 is a deficient number, since it is larger than the sum of its proper divisors (36097982).

72195958 is a wasteful number, since it uses less digits than its factorization.

72195958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36097981.

The product of its digits is 226800, while the sum is 46.

The square root of 72195958 is about 8496.8204641501. The cubic root of 72195958 is about 416.3938385323.

It can be divided in two parts, 72195 and 958, that added together give a triangular number (73153 = T₃₈₂).

The spelling of 72195958 in words is "seventy-two million, one hundred ninety-five thousand, nine hundred fifty-eight".