72019481 has 8 divisors (see below), whose sum is σ = 76771200. Its totient is φ = 67363920.

The previous prime is 72019469. The next prime is 72019483. The reversal of 72019481 is 18491027.

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-72019481 is a prime.

It is a super-2 number, since 2×72019481² = 10373611287018722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72019483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22490 + ... + 25491.

It is an arithmetic number, because the mean of its divisors is an integer number (9596400).

Almost surely, 2^72019481 is an apocalyptic number.

It is an amenable number.

72019481 is a deficient number, since it is larger than the sum of its proper divisors (4751719).

72019481 is a wasteful number, since it uses less digits than its factorization.

72019481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48079.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 72019481 is about 8486.4292255341. The cubic root of 72019481 is about 416.0542817019.

The spelling of 72019481 in words is "seventy-two million, nineteen thousand, four hundred eighty-one".