72066044 has 12 divisors (see below), whose sum is σ = 130464600. Its totient is φ = 34790448.

The previous prime is 72066037. The next prime is 72066083. The reversal of 72066044 is 44066027.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 72065998 and 72066016.

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, 310514 + ... + 310745.

It is an arithmetic number, because the mean of its divisors is an integer number (10872050).

Almost surely, 2^72066044 is an apocalyptic number.

It is an amenable number.

72066044 is a deficient number, since it is larger than the sum of its proper divisors (58398556).

72066044 is a wasteful number, since it uses less digits than its factorization.

72066044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621292 (or 621290 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 72066044 is about 8489.1721622311. The cubic root of 72066044 is about 416.1439267151.

Subtracting from 72066044 its sum of digits (29), we obtain a triangular number (72066015 = T₁₂₀₀₅).

The spelling of 72066044 in words is "seventy-two million, sixty-six thousand, forty-four".