72205019 has 8 divisors (see below), whose sum is σ = 75736128. Its totient is φ = 68757120.

The previous prime is 72204989. The next prime is 72205033. The reversal of 72205019 is 91050227.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72205019 is a prime.

It is a super-2 number, since 2×72205019² = 10427129537580722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72205039) 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, 19022 + ... + 22499.

It is an arithmetic number, because the mean of its divisors is an integer number (9467016).

Almost surely, 2^72205019 is an apocalyptic number.

72205019 is a deficient number, since it is larger than the sum of its proper divisors (3531109).

72205019 is a wasteful number, since it uses less digits than its factorization.

72205019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41605.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 72205019 is about 8497.3536468715. The cubic root of 72205019 is about 416.4112577288.

The spelling of 72205019 in words is "seventy-two million, two hundred five thousand, nineteen".