47540420 has 12 divisors (see below), whose sum is σ = 99834924. Its totient is φ = 19016160.

The previous prime is 47540407. The next prime is 47540429. The reversal of 47540420 is 2404574.

It can be written as a sum of positive squares in 2 ways, for example, as 30118144 + 17422276 = 5488^2 + 4174^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 47540420.

It is not an unprimeable number, because it can be changed into a prime (47540429) 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, 1188491 + ... + 1188530.

It is an arithmetic number, because the mean of its divisors is an integer number (8319577).

Almost surely, 2^47540420 is an apocalyptic number.

It is an amenable number.

47540420 is an abundant number, since it is smaller than the sum of its proper divisors (52294504).

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

47540420 is a wasteful number, since it uses less digits than its factorization.

47540420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2377030 (or 2377028 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 47540420 is about 6894.9561274891. The cubic root of 47540420 is about 362.2605187964.

Adding to 47540420 its reverse (2404574), we get a palindrome (49944994).

The spelling of 47540420 in words is "forty-seven million, five hundred forty thousand, four hundred twenty".