72379522 has 4 divisors (see below), whose sum is σ = 108569286. Its totient is φ = 36189760.

The previous prime is 72379519. The next prime is 72379537. The reversal of 72379522 is 22597327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22597327 = 19 ⋅1189333.

It can be written as a sum of positive squares in only one way, i.e., 68541841 + 3837681 = 8279^2 + 1959^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18094879 + ... + 18094882.

Almost surely, 2^72379522 is an apocalyptic number.

72379522 is a deficient number, since it is larger than the sum of its proper divisors (36189764).

72379522 is a wasteful number, since it uses less digits than its factorization.

72379522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36189763.

The product of its digits is 52920, while the sum is 37.

The square root of 72379522 is about 8507.6155296299. The cubic root of 72379522 is about 416.7464447419.

The spelling of 72379522 in words is "seventy-two million, three hundred seventy-nine thousand, five hundred twenty-two".