47452240 has 40 divisors (see below), whose sum is σ = 120358368. Its totient is φ = 17255040.

The previous prime is 47452217. The next prime is 47452247. The reversal of 47452240 is 4225474.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 47452199 and 47452208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47452247) 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, 26082 + ... + 27841.

Almost surely, 2^47452240 is an apocalyptic number.

47452240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47452240 is an abundant number, since it is smaller than the sum of its proper divisors (72906128).

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

47452240 is a wasteful number, since it uses less digits than its factorization.

47452240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53947 (or 53941 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 28.

The square root of 47452240 is about 6888.5586300764. The cubic root of 47452240 is about 362.0364014146.

The spelling of 47452240 in words is "forty-seven million, four hundred fifty-two thousand, two hundred forty".