72111332 has 24 divisors (see below), whose sum is σ = 130609920. Its totient is φ = 34800480.

The previous prime is 72111307. The next prime is 72111337. The reversal of 72111332 is 23311127.

It is not an unprimeable number, because it can be changed into a prime (72111337) 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 7 ways as a sum of consecutive naturals, for example, 83519 + ... + 84377.

It is an arithmetic number, because the mean of its divisors is an integer number (5442080).

Almost surely, 2^72111332 is an apocalyptic number.

It is an amenable number.

72111332 is a deficient number, since it is larger than the sum of its proper divisors (58498588).

72111332 is a wasteful number, since it uses less digits than its factorization.

72111332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571 (or 1569 counting only the distinct ones).

The product of its digits is 252, while the sum is 20.

The square root of 72111332 is about 8491.8391411990. The cubic root of 72111332 is about 416.2310800107.

Adding to 72111332 its reverse (23311127), we get a palindrome (95422459).

The spelling of 72111332 in words is "seventy-two million, one hundred eleven thousand, three hundred thirty-two".