72214971 has 4 divisors (see below), whose sum is σ = 96286632. Its totient is φ = 48143312.

The previous prime is 72214969. The next prime is 72214973. The reversal of 72214971 is 17941227.

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

It is an interprime number because it is at equal distance from previous prime (72214969) and next prime (72214973).

It is a cyclic number.

It is not a de Polignac number, because 72214971 - 2¹ = 72214969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72214973) 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, 12035826 + ... + 12035831.

It is an arithmetic number, because the mean of its divisors is an integer number (24071658).

Almost surely, 2^72214971 is an apocalyptic number.

72214971 is a deficient number, since it is larger than the sum of its proper divisors (24071661).

72214971 is a wasteful number, since it uses less digits than its factorization.

72214971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24071660.

The product of its digits is 7056, while the sum is 33.

The square root of 72214971 is about 8497.9392207758. The cubic root of 72214971 is about 416.4303881370.

The spelling of 72214971 in words is "seventy-two million, two hundred fourteen thousand, nine hundred seventy-one".