72229785 has 16 divisors (see below), whose sum is σ = 115909056. Its totient is φ = 38408768.

The previous prime is 72229733. The next prime is 72229799. The reversal of 72229785 is 58792227.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 72229785 - 2⁸ = 72229529 is a prime.

It is a super-2 number, since 2×72229785² = 10434283682292450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1734 + ... + 12143.

It is an arithmetic number, because the mean of its divisors is an integer number (7244316).

Almost surely, 2^72229785 is an apocalyptic number.

It is an amenable number.

72229785 is a deficient number, since it is larger than the sum of its proper divisors (43679271).

72229785 is a wasteful number, since it uses less digits than its factorization.

72229785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14232.

The product of its digits is 141120, while the sum is 42.

The square root of 72229785 is about 8498.8107991648. The cubic root of 72229785 is about 416.4588613557.

The spelling of 72229785 in words is "seventy-two million, two hundred twenty-nine thousand, seven hundred eighty-five".