47640746 has 8 divisors (see below), whose sum is σ = 72809604. Its totient is φ = 23370880.

The previous prime is 47640743. The next prime is 47640757. The reversal of 47640746 is 64704674.

It can be written as a sum of positive squares in 2 ways, for example, as 46717225 + 923521 = 6835^2 + 961^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47640743) 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, 224615 + ... + 224826.

Almost surely, 2^47640746 is an apocalyptic number.

47640746 is a deficient number, since it is larger than the sum of its proper divisors (25168858).

47640746 is a wasteful number, since it uses less digits than its factorization.

47640746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449496.

The product of its (nonzero) digits is 112896, while the sum is 38.

The square root of 47640746 is about 6902.2276114310. The cubic root of 47640746 is about 362.5151695594.

The spelling of 47640746 in words is "forty-seven million, six hundred forty thousand, seven hundred forty-six".