72452269 has 4 divisors (see below), whose sum is σ = 72493344. Its totient is φ = 72411196.

The previous prime is 72452267. The next prime is 72452287. The reversal of 72452269 is 96225427.

It is a happy number.

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 72452269 - 2¹ = 72452267 is a prime.

It is a super-2 number, since 2×72452269² = 10498662566496722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72452267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17767 + ... + 21460.

It is an arithmetic number, because the mean of its divisors is an integer number (18123336).

Almost surely, 2^72452269 is an apocalyptic number.

It is an amenable number.

72452269 is a deficient number, since it is larger than the sum of its proper divisors (41075).

72452269 is a wasteful number, since it uses less digits than its factorization.

72452269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41074.

The product of its digits is 60480, while the sum is 37.

The square root of 72452269 is about 8511.8898606596. The cubic root of 72452269 is about 416.8860187607.

The spelling of 72452269 in words is "seventy-two million, four hundred fifty-two thousand, two hundred sixty-nine".