73228247 has 2 divisors, whose sum is σ = 73228248. Its totient is φ = 73228246.

The previous prime is 73228241. The next prime is 73228279. The reversal of 73228247 is 74282237.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73228247 - 2⁸ = 73227991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73228241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36614123 + 36614124.

It is an arithmetic number, because the mean of its divisors is an integer number (36614124).

Almost surely, 2^73228247 is an apocalyptic number.

73228247 is a deficient number, since it is larger than the sum of its proper divisors (1).

73228247 is an equidigital number, since it uses as much as digits as its factorization.

73228247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37632, while the sum is 35.

The square root of 73228247 is about 8557.3504661198. The cubic root of 73228247 is about 418.3690471071.

The spelling of 73228247 in words is "seventy-three million, two hundred twenty-eight thousand, two hundred forty-seven".