47785440 has 96 divisors (see below), whose sum is σ = 152028576. Its totient is φ = 12615680.

The previous prime is 47785433. The next prime is 47785469. The reversal of 47785440 is 4458774.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53800 + ... + 54680.

It is an arithmetic number, because the mean of its divisors is an integer number (1583631).

Almost surely, 2^47785440 is an apocalyptic number.

47785440 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 47785440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76014288).

47785440 is an abundant number, since it is smaller than the sum of its proper divisors (104243136).

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

47785440 is a wasteful number, since it uses less digits than its factorization.

47785440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 39.

The square root of 47785440 is about 6912.7013533061. The cubic root of 47785440 is about 362.8818077822.

The spelling of 47785440 in words is "forty-seven million, seven hundred eighty-five thousand, four hundred forty".