72222853 has 8 divisors (see below), whose sum is σ = 75985560. Its totient is φ = 68555520.

The previous prime is 72222823. The next prime is 72222863. The reversal of 72222853 is 35822227.

It can be written as a sum of positive squares in 4 ways, for example, as 8749764 + 63473089 = 2958^2 + 7967^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72222853 - 2¹³ = 72214661 is a prime.

It is a super-2 number, since 2×72222853² = 10432280990919218, 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 (72222823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22288 + ... + 25321.

It is an arithmetic number, because the mean of its divisors is an integer number (9498195).

Almost surely, 2^72222853 is an apocalyptic number.

It is an amenable number.

72222853 is a deficient number, since it is larger than the sum of its proper divisors (3762707).

72222853 is a wasteful number, since it uses less digits than its factorization.

72222853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47687.

The product of its digits is 13440, while the sum is 31.

The square root of 72222853 is about 8498.4029676169. The cubic root of 72222853 is about 416.4455382038.

The spelling of 72222853 in words is "seventy-two million, two hundred twenty-two thousand, eight hundred fifty-three".