72120606 has 16 divisors (see below), whose sum is σ = 144598800. Its totient is φ = 23980608.

The previous prime is 72120577. The next prime is 72120641. The reversal of 72120606 is 60602127.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12241 + ... + 17148.

It is an arithmetic number, because the mean of its divisors is an integer number (9037425).

Almost surely, 2^72120606 is an apocalyptic number.

72120606 is an abundant number, since it is smaller than the sum of its proper divisors (72478194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72120606 is a wasteful number, since it uses less digits than its factorization.

72120606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29803.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 72120606 is about 8492.3851773221. The cubic root of 72120606 is about 416.2489226135.

The spelling of 72120606 in words is "seventy-two million, one hundred twenty thousand, six hundred six".