72429283 has 4 divisors (see below), whose sum is σ = 72550800. Its totient is φ = 72307768.

The previous prime is 72429257. The next prime is 72429289. The reversal of 72429283 is 38292427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38292427 = 2383 ⋅16069.

It is a cyclic number.

It is not a de Polignac number, because 72429283 - 2²¹ = 70332131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72429289) 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, 59860 + ... + 61057.

It is an arithmetic number, because the mean of its divisors is an integer number (18137700).

Almost surely, 2^72429283 is an apocalyptic number.

72429283 is a deficient number, since it is larger than the sum of its proper divisors (121517).

72429283 is a wasteful number, since it uses less digits than its factorization.

72429283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121516.

The product of its digits is 48384, while the sum is 37.

The square root of 72429283 is about 8510.5395246130. The cubic root of 72429283 is about 416.8419274083.

The spelling of 72429283 in words is "seventy-two million, four hundred twenty-nine thousand, two hundred eighty-three".