47506240 has 28 divisors (see below), whose sum is σ = 113124996. Its totient is φ = 19002368.

The previous prime is 47506231. The next prime is 47506241. The reversal of 47506240 is 4260574.

It can be written as a sum of positive squares in 2 ways, for example, as 26050816 + 21455424 = 5104^2 + 4632^2 .

It is a junction number, because it is equal to n+sod(n) for n = 47506199 and 47506208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47506241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73909 + ... + 74548.

Almost surely, 2^47506240 is an apocalyptic number.

47506240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47506240 is an abundant number, since it is smaller than the sum of its proper divisors (65618756).

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

47506240 is a wasteful number, since it uses less digits than its factorization.

47506240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148474 (or 148464 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 47506240 is about 6892.4770583586. The cubic root of 47506240 is about 362.1736801781.

The spelling of 47506240 in words is "forty-seven million, five hundred six thousand, two hundred forty".