72273347 has 4 divisors (see below), whose sum is σ = 72327360. Its totient is φ = 72219336.

The previous prime is 72273323. The next prime is 72273353. The reversal of 72273347 is 74337227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74337227 = 59 ⋅1259953.

It is a cyclic number.

It is not a de Polignac number, because 72273347 - 2¹⁴ = 72256963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72273317) 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, 24947 + ... + 27692.

It is an arithmetic number, because the mean of its divisors is an integer number (18081840).

Almost surely, 2^72273347 is an apocalyptic number.

72273347 is a deficient number, since it is larger than the sum of its proper divisors (54013).

72273347 is a wasteful number, since it uses less digits than its factorization.

72273347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54012.

The product of its digits is 49392, while the sum is 35.

The square root of 72273347 is about 8501.3732420121. The cubic root of 72273347 is about 416.5425670597.

The spelling of 72273347 in words is "seventy-two million, two hundred seventy-three thousand, three hundred forty-seven".