72069018 has 32 divisors (see below), whose sum is σ = 174420864. Its totient is φ = 19379712.

The previous prime is 72069013. The next prime is 72069037. The reversal of 72069018 is 81096027.

It is a self number, because there is not a number n which added to its sum of digits gives 72069018.

It is not an unprimeable number, because it can be changed into a prime (72069013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49755 + ... + 51182.

It is an arithmetic number, because the mean of its divisors is an integer number (5450652).

Almost surely, 2^72069018 is an apocalyptic number.

72069018 is an abundant number, since it is smaller than the sum of its proper divisors (102351846).

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

72069018 is a wasteful number, since it uses less digits than its factorization.

72069018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100966.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 72069018 is about 8489.3473247359. The cubic root of 72069018 is about 416.1496510708.

The spelling of 72069018 in words is "seventy-two million, sixty-nine thousand, eighteen".