72719019 has 16 divisors (see below), whose sum is σ = 108743040. Its totient is φ = 48024360.

The previous prime is 72718999. The next prime is 72719041. The reversal of 72719019 is 91091727.

It is not a de Polignac number, because 72719019 - 2¹² = 72714923 is a prime.

It is a super-2 number, since 2×72719019² = 10576111448644722, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72719069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9697 + ... + 15474.

It is an arithmetic number, because the mean of its divisors is an integer number (6796440).

Almost surely, 2^72719019 is an apocalyptic number.

72719019 is a deficient number, since it is larger than the sum of its proper divisors (36024021).

72719019 is a wasteful number, since it uses less digits than its factorization.

72719019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25287 (or 25281 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 36.

The square root of 72719019 is about 8527.5447228379. The cubic root of 72719019 is about 417.3970133348.

It can be divided in two parts, 7271 and 9019, that added together give a triangular number (16290 = T₁₈₀).

The spelling of 72719019 in words is "seventy-two million, seven hundred nineteen thousand, nineteen".