72290733 has 8 divisors (see below), whose sum is σ = 97241088. Its totient is φ = 47767104.

The previous prime is 72290723. The next prime is 72290741. The reversal of 72290733 is 33709227.

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

It is not a de Polignac number, because 72290733 - 2⁴ = 72290717 is a prime.

It is a super-3 number, since 3×72290733³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72290694 and 72290703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72290723) by changing a digit.

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, 106285 + ... + 106962.

It is an arithmetic number, because the mean of its divisors is an integer number (12155136).

Almost surely, 2^72290733 is an apocalyptic number.

It is an amenable number.

72290733 is a deficient number, since it is larger than the sum of its proper divisors (24950355).

72290733 is a wasteful number, since it uses less digits than its factorization.

72290733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213363.

The product of its (nonzero) digits is 15876, while the sum is 33.

The square root of 72290733 is about 8502.3957212071. The cubic root of 72290733 is about 416.5759653951.

The spelling of 72290733 in words is "seventy-two million, two hundred ninety thousand, seven hundred thirty-three".