47047540 has 24 divisors (see below), whose sum is σ = 99309672. Its totient is φ = 18721920.

The previous prime is 47047537. The next prime is 47047543. The reversal of 47047540 is 4574074.

It is an interprime number because it is at equal distance from previous prime (47047537) and next prime (47047543).

It can be written as a sum of positive squares in 4 ways, for example, as 11573604 + 35473936 = 3402^2 + 5956^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47047543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2031 + ... + 9910.

It is an arithmetic number, because the mean of its divisors is an integer number (4137903).

Almost surely, 2^47047540 is an apocalyptic number.

It is an amenable number.

47047540 is an abundant number, since it is smaller than the sum of its proper divisors (52262132).

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

47047540 is a wasteful number, since it uses less digits than its factorization.

47047540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12147 (or 12145 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 47047540 is about 6859.1209349304. The cubic root of 47047540 is about 361.0042433184.

The spelling of 47047540 in words is "forty-seven million, forty-seven thousand, five hundred forty".