73220347 has 8 divisors (see below), whose sum is σ = 74754576. Its totient is φ = 71699232.

The previous prime is 73220317. The next prime is 73220351. The reversal of 73220347 is 74302237.

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 73220347 - 2¹⁵ = 73187579 is a prime.

It is a super-2 number, since 2×73220347² = 10722438429600818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73220317) 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, 8433 + ... + 14749.

It is an arithmetic number, because the mean of its divisors is an integer number (9344322).

Almost surely, 2^73220347 is an apocalyptic number.

73220347 is a deficient number, since it is larger than the sum of its proper divisors (1534229).

73220347 is a wasteful number, since it uses less digits than its factorization.

73220347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6557.

The product of its (nonzero) digits is 7056, while the sum is 28.

The square root of 73220347 is about 8556.8888621975. Note that the first 4 decimals coincide. The cubic root of 73220347 is about 418.3540017548.

The spelling of 73220347 in words is "seventy-three million, two hundred twenty thousand, three hundred forty-seven".