72429533 has 4 divisors (see below), whose sum is σ = 79014048. Its totient is φ = 65845020.

The previous prime is 72429527. The next prime is 72429551. The reversal of 72429533 is 33592427.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72429533 - 2⁴ = 72429517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72429493 and 72429502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72429523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3292241 + ... + 3292262.

It is an arithmetic number, because the mean of its divisors is an integer number (19753512).

Almost surely, 2^72429533 is an apocalyptic number.

It is an amenable number.

72429533 is a deficient number, since it is larger than the sum of its proper divisors (6584515).

72429533 is a wasteful number, since it uses less digits than its factorization.

72429533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6584514.

The product of its digits is 45360, while the sum is 35.

The square root of 72429533 is about 8510.5542122708. The cubic root of 72429533 is about 416.8424070042.

The spelling of 72429533 in words is "seventy-two million, four hundred twenty-nine thousand, five hundred thirty-three".