72442853 has 4 divisors (see below), whose sum is σ = 82791840. Its totient is φ = 62093868.

The previous prime is 72442823. The next prime is 72442861. The reversal of 72442853 is 35824427.

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, and also an emirpimes, since its reverse is a distinct semiprime: 35824427 = 239 ⋅149893.

It is a cyclic number.

It is not a de Polignac number, because 72442853 - 2¹⁶ = 72377317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72442813) 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, 5174483 + ... + 5174496.

It is an arithmetic number, because the mean of its divisors is an integer number (20697960).

Almost surely, 2^72442853 is an apocalyptic number.

It is an amenable number.

72442853 is a deficient number, since it is larger than the sum of its proper divisors (10348987).

72442853 is a wasteful number, since it uses less digits than its factorization.

72442853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10348986.

The product of its digits is 53760, while the sum is 35.

The square root of 72442853 is about 8511.3367340272. The cubic root of 72442853 is about 416.8679582782.

The spelling of 72442853 in words is "seventy-two million, four hundred forty-two thousand, eight hundred fifty-three".