47509320 has 64 divisors (see below), whose sum is σ = 142989120. Its totient is φ = 12628224.

The previous prime is 47509313. The next prime is 47509327. The reversal of 47509320 is 2390574.

It is an interprime number because it is at equal distance from previous prime (47509313) and next prime (47509327).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (47509327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62382 + ... + 63138.

It is an arithmetic number, because the mean of its divisors is an integer number (2234205).

Almost surely, 2^47509320 is an apocalyptic number.

47509320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47509320 is an abundant number, since it is smaller than the sum of its proper divisors (95479800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47509320 is a wasteful number, since it uses less digits than its factorization.

47509320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294 (or 1290 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 47509320 is about 6892.7004867468. The cubic root of 47509320 is about 362.1815070154.

Adding to 47509320 its reverse (2390574), we get a palindrome (49899894).

The spelling of 47509320 in words is "forty-seven million, five hundred nine thousand, three hundred twenty".