73140947 has 8 divisors (see below), whose sum is σ = 79999920. Its totient is φ = 66316960.

The previous prime is 73140913. The next prime is 73140961. The reversal of 73140947 is 74904137.

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 73140947 - 2¹⁰ = 73139923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73140247) 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, 4268 + ... + 12825.

It is an arithmetic number, because the mean of its divisors is an integer number (9999990).

Almost surely, 2^73140947 is an apocalyptic number.

73140947 is a deficient number, since it is larger than the sum of its proper divisors (6858973).

73140947 is a wasteful number, since it uses less digits than its factorization.

73140947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17493.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 73140947 is about 8552.2480670289. The cubic root of 73140947 is about 418.2027263090.

The spelling of 73140947 in words is "seventy-three million, one hundred forty thousand, nine hundred forty-seven".