72235019 has 4 divisors (see below), whose sum is σ = 75375696. Its totient is φ = 69094344.

The previous prime is 72235013. The next prime is 72235021. The reversal of 72235019 is 91053227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91053227 = 1283 ⋅70969.

It is a cyclic number.

It is not a de Polignac number, because 72235019 - 2¹² = 72230923 is a prime.

It is a super-2 number, since 2×72235019² = 10435795939860722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72234982 and 72235000.

It is not an unprimeable number, because it can be changed into a prime (72235013) 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, 1570304 + ... + 1570349.

It is an arithmetic number, because the mean of its divisors is an integer number (18843924).

Almost surely, 2^72235019 is an apocalyptic number.

72235019 is a deficient number, since it is larger than the sum of its proper divisors (3140677).

72235019 is a wasteful number, since it uses less digits than its factorization.

72235019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3140676.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 72235019 is about 8499.1187190202. The cubic root of 72235019 is about 416.4689204240.

The spelling of 72235019 in words is "seventy-two million, two hundred thirty-five thousand, nineteen".