72214417 has 8 divisors (see below), whose sum is σ = 80908992. Its totient is φ = 63874800.

The previous prime is 72214403. The next prime is 72214451. The reversal of 72214417 is 71441227.

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

It is a de Polignac number, because none of the positive numbers 2^k-72214417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72214217) 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, 88309 + ... + 89122.

It is an arithmetic number, because the mean of its divisors is an integer number (10113624).

Almost surely, 2^72214417 is an apocalyptic number.

It is an amenable number.

72214417 is a deficient number, since it is larger than the sum of its proper divisors (8694575).

72214417 is a wasteful number, since it uses less digits than its factorization.

72214417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177479.

The product of its digits is 3136, while the sum is 28.

The square root of 72214417 is about 8497.9066245753. The cubic root of 72214417 is about 416.4293232469.

The spelling of 72214417 in words is "seventy-two million, two hundred fourteen thousand, four hundred seventeen".