72371019 has 32 divisors (see below), whose sum is σ = 119848960. Its totient is φ = 37908000.

The previous prime is 72371017. The next prime is 72371029. The reversal of 72371019 is 91017327.

It is not a de Polignac number, because 72371019 - 2¹ = 72371017 is a prime.

It is a super-2 number, since 2×72371019² = 10475128782196722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72371011) 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 31 ways as a sum of consecutive naturals, for example, 9444 + ... + 15294.

It is an arithmetic number, because the mean of its divisors is an integer number (3745280).

Almost surely, 2^72371019 is an apocalyptic number.

72371019 is a deficient number, since it is larger than the sum of its proper divisors (47477941).

72371019 is a wasteful number, since it uses less digits than its factorization.

72371019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5911.

The product of its (nonzero) digits is 2646, while the sum is 30.

The square root of 72371019 is about 8507.1157862110. The cubic root of 72371019 is about 416.7301245927.

It can be divided in two parts, 7237101 and 9, that added together give a triangular number (7237110 = T₃₈₀₄).

The spelling of 72371019 in words is "seventy-two million, three hundred seventy-one thousand, nineteen".