72293029 has 4 divisors (see below), whose sum is σ = 72692620. Its totient is φ = 71893440.

The previous prime is 72293017. The next prime is 72293057. The reversal of 72293029 is 92039227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92039227 = 7 ⋅13148461.

It can be written as a sum of positive squares in 2 ways, for example, as 636804 + 71656225 = 798^2 + 8465^2 .

It is a cyclic number.

It is not a de Polignac number, because 72293029 - 2²¹ = 70195877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72292985 and 72293003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72293059) 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 3 ways as a sum of consecutive naturals, for example, 199524 + ... + 199885.

It is an arithmetic number, because the mean of its divisors is an integer number (18173155).

Almost surely, 2^72293029 is an apocalyptic number.

It is an amenable number.

72293029 is a deficient number, since it is larger than the sum of its proper divisors (399591).

72293029 is a wasteful number, since it uses less digits than its factorization.

72293029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399590.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 72293029 is about 8502.5307409030. The cubic root of 72293029 is about 416.5803755883.

The spelling of 72293029 in words is "seventy-two million, two hundred ninety-three thousand, twenty-nine".