72449619 has 8 divisors (see below), whose sum is σ = 105381312. Its totient is φ = 43908840.

The previous prime is 72449599. The next prime is 72449647. The reversal of 72449619 is 91694427.

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

It is not a de Polignac number, because 72449619 - 2⁷ = 72449491 is a prime.

It is a super-2 number, since 2×72449619² = 10497894586490322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72449659) 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, 1097689 + ... + 1097754.

It is an arithmetic number, because the mean of its divisors is an integer number (13172664).

Almost surely, 2^72449619 is an apocalyptic number.

72449619 is a deficient number, since it is larger than the sum of its proper divisors (32931693).

72449619 is a wasteful number, since it uses less digits than its factorization.

72449619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2195457.

The product of its digits is 108864, while the sum is 42.

The square root of 72449619 is about 8511.7341946280. The cubic root of 72449619 is about 416.8809360516.

The spelling of 72449619 in words is "seventy-two million, four hundred forty-nine thousand, six hundred nineteen".