72984019 has 4 divisors (see below), whose sum is σ = 73077544. Its totient is φ = 72890496.

The previous prime is 72984011. The next prime is 72984047. The reversal of 72984019 is 91048927.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72984019 - 2³ = 72984011 is a prime.

It is a super-2 number, since 2×72984019² = 10653334058784722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72984011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45582 + ... + 47155.

It is an arithmetic number, because the mean of its divisors is an integer number (18269386).

Almost surely, 2^72984019 is an apocalyptic number.

72984019 is a deficient number, since it is larger than the sum of its proper divisors (93525).

72984019 is an equidigital number, since it uses as much as digits as its factorization.

72984019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93524.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 72984019 is about 8543.0684768413. The cubic root of 72984019 is about 417.9034196865.

It can be divided in two parts, 729 and 84019, that added together give a palindrome (84748).

The spelling of 72984019 in words is "seventy-two million, nine hundred eighty-four thousand, nineteen".