72175486 has 4 divisors (see below), whose sum is σ = 108263232. Its totient is φ = 36087742.

The previous prime is 72175463. The next prime is 72175501. The reversal of 72175486 is 68457127.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 18043870 + ... + 18043873.

It is an arithmetic number, because the mean of its divisors is an integer number (27065808).

Almost surely, 2^72175486 is an apocalyptic number.

72175486 is a deficient number, since it is larger than the sum of its proper divisors (36087746).

72175486 is a wasteful number, since it uses less digits than its factorization.

72175486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36087745.

The product of its digits is 94080, while the sum is 40.

The square root of 72175486 is about 8495.6156928147. The cubic root of 72175486 is about 416.3544770465.

The spelling of 72175486 in words is "seventy-two million, one hundred seventy-five thousand, four hundred eighty-six".