47740640 has 48 divisors (see below), whose sum is σ = 117700128. Its totient is φ = 18264576.

The previous prime is 47740633. The next prime is 47740669. The reversal of 47740640 is 4604774.

47740640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 47740597 and 47740606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2807 + ... + 10166.

It is an arithmetic number, because the mean of its divisors is an integer number (2452086).

Almost surely, 2^47740640 is an apocalyptic number.

47740640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47740640 is an abundant number, since it is smaller than the sum of its proper divisors (69959488).

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

47740640 is a wasteful number, since it uses less digits than its factorization.

47740640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13011 (or 13003 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 47740640 is about 6909.4601815192. The cubic root of 47740640 is about 362.7683688483.

The spelling of 47740640 in words is "forty-seven million, seven hundred forty thousand, six hundred forty".