72214491 has 8 divisors (see below), whose sum is σ = 98888464. Its totient is φ = 46841760.

The previous prime is 72214451. The next prime is 72214523. The reversal of 72214491 is 19441227.

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

It is not a de Polignac number, because 72214491 - 2¹¹ = 72212443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72214451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325180 + ... + 325401.

It is an arithmetic number, because the mean of its divisors is an integer number (12361058).

Almost surely, 2^72214491 is an apocalyptic number.

72214491 is a deficient number, since it is larger than the sum of its proper divisors (26673973).

72214491 is a wasteful number, since it uses less digits than its factorization.

72214491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650621.

The product of its digits is 4032, while the sum is 30.

The square root of 72214491 is about 8497.9109785876. The cubic root of 72214491 is about 416.4294654888.

The spelling of 72214491 in words is "seventy-two million, two hundred fourteen thousand, four hundred ninety-one".