47428730 has 8 divisors (see below), whose sum is σ = 85371732. Its totient is φ = 18971488.

The previous prime is 47428721. The next prime is 47428739. The reversal of 47428730 is 3782474.

It is an interprime number because it is at equal distance from previous prime (47428721) and next prime (47428739).

It can be written as a sum of positive squares in 2 ways, for example, as 47210641 + 218089 = 6871^2 + 467^2 .

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

It is not an unprimeable number, because it can be changed into a prime (47428739) 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, 2371427 + ... + 2371446.

Almost surely, 2^47428730 is an apocalyptic number.

47428730 is a deficient number, since it is larger than the sum of its proper divisors (37943002).

47428730 is a wasteful number, since it uses less digits than its factorization.

47428730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4742880.

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

The square root of 47428730 is about 6886.8519658840. The cubic root of 47428730 is about 361.9766017660.

The spelling of 47428730 in words is "forty-seven million, four hundred twenty-eight thousand, seven hundred thirty".