72433147 has 2 divisors, whose sum is σ = 72433148. Its totient is φ = 72433146.

The previous prime is 72433117. The next prime is 72433211. The reversal of 72433147 is 74133427.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72433147 is a prime.

It is not a weakly prime, because it can be changed into another prime (72433117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36216573 + 36216574.

It is an arithmetic number, because the mean of its divisors is an integer number (36216574).

Almost surely, 2^72433147 is an apocalyptic number.

72433147 is a deficient number, since it is larger than the sum of its proper divisors (1).

72433147 is an equidigital number, since it uses as much as digits as its factorization.

72433147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 31.

The square root of 72433147 is about 8510.7665342201. The cubic root of 72433147 is about 416.8493399192.

The spelling of 72433147 in words is "seventy-two million, four hundred thirty-three thousand, one hundred forty-seven".