47506578 has 48 divisors (see below), whose sum is σ = 111081600. Its totient is φ = 13505184.

The previous prime is 47506573. The next prime is 47506583. The reversal of 47506578 is 87560574.

It is an interprime number because it is at equal distance from previous prime (47506573) and next prime (47506583).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (47506573) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102375 + ... + 102837.

It is an arithmetic number, because the mean of its divisors is an integer number (2314200).

Almost surely, 2^47506578 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47506578, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55540800).

47506578 is an abundant number, since it is smaller than the sum of its proper divisors (63575022).

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

47506578 is a wasteful number, since it uses less digits than its factorization.

47506578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831 (or 824 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 42.

The square root of 47506578 is about 6892.5015778018. The cubic root of 47506578 is about 362.1745391138.

It can be divided in two parts, 47506 and 578, that added together give a palindrome (48084).

The spelling of 47506578 in words is "forty-seven million, five hundred six thousand, five hundred seventy-eight".