47005440 has 72 divisors (see below), whose sum is σ = 150135888. Its totient is φ = 12533760.

The previous prime is 47005423. The next prime is 47005447. The reversal of 47005440 is 4450074.

It is a super-2 number, since 2×47005440² = 4419022779187200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 47005440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47005447) 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, 2281 + ... + 9960.

Almost surely, 2^47005440 is an apocalyptic number.

47005440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47005440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75067944).

47005440 is an abundant number, since it is smaller than the sum of its proper divisors (103130448).

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

47005440 is a wasteful number, since it uses less digits than its factorization.

47005440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12265 (or 12251 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 47005440 is about 6856.0513416981. The cubic root of 47005440 is about 360.8965308908.

The spelling of 47005440 in words is "forty-seven million, five thousand, four hundred forty".