72120206 has 8 divisors (see below), whose sum is σ = 109549920. Its totient is φ = 35603568.

The previous prime is 72120163. The next prime is 72120241. The reversal of 72120206 is 60202127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×72120206² = 10402648226964872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228071 + ... + 228386.

It is an arithmetic number, because the mean of its divisors is an integer number (13693740).

Almost surely, 2^72120206 is an apocalyptic number.

72120206 is a deficient number, since it is larger than the sum of its proper divisors (37429714).

72120206 is a wasteful number, since it uses less digits than its factorization.

72120206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456538.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 72120206 is about 8492.3616267797. The cubic root of 72120206 is about 416.2481530698.

The spelling of 72120206 in words is "seventy-two million, one hundred twenty thousand, two hundred six".