47870440 has 32 divisors (see below), whose sum is σ = 110004480. Its totient is φ = 18740032.

The previous prime is 47870377. The next prime is 47870461. The reversal of 47870440 is 4407874.

It is a junction number, because it is equal to n+sod(n) for n = 47870396 and 47870405.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10852 + ... + 14611.

It is an arithmetic number, because the mean of its divisors is an integer number (3437640).

Almost surely, 2^47870440 is an apocalyptic number.

47870440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47870440 is an abundant number, since it is smaller than the sum of its proper divisors (62134040).

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

47870440 is a wasteful number, since it uses less digits than its factorization.

47870440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25521 (or 25517 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 34.

The square root of 47870440 is about 6918.8467247078. The cubic root of 47870440 is about 363.0968431771.

The spelling of 47870440 in words is "forty-seven million, eight hundred seventy thousand, four hundred forty".