72812227 has 8 divisors (see below), whose sum is σ = 76126464. Its totient is φ = 69510408.

The previous prime is 72812209. The next prime is 72812239. The reversal of 72812227 is 72221827.

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

It is a cyclic number.

It is not a de Polignac number, because 72812227 - 2⁷ = 72812099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72812297) 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, 10138 + ... + 15760.

It is an arithmetic number, because the mean of its divisors is an integer number (9515808).

Almost surely, 2^72812227 is an apocalyptic number.

72812227 is a deficient number, since it is larger than the sum of its proper divisors (3314237).

72812227 is a wasteful number, since it uses less digits than its factorization.

72812227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6209.

The product of its digits is 6272, while the sum is 31.

The square root of 72812227 is about 8533.0080862495. The cubic root of 72812227 is about 417.5752708299.

The spelling of 72812227 in words is "seventy-two million, eight hundred twelve thousand, two hundred twenty-seven".