72147214 has 16 divisors (see below), whose sum is σ = 110534688. Its totient is φ = 35309952.

The previous prime is 72147197. The next prime is 72147217. The reversal of 72147214 is 41274127.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72147217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18199 + ... + 21805.

It is an arithmetic number, because the mean of its divisors is an integer number (6908418).

Almost surely, 2^72147214 is an apocalyptic number.

72147214 is a deficient number, since it is larger than the sum of its proper divisors (38387474).

72147214 is a wasteful number, since it uses less digits than its factorization.

72147214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3819.

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

The square root of 72147214 is about 8493.9516127654. The cubic root of 72147214 is about 416.3001062727.

It can be divided in two parts, 72147 and 214, that added together give a square (72361 = 269²).

The spelling of 72147214 in words is "seventy-two million, one hundred forty-seven thousand, two hundred fourteen".