47917040 has 20 divisors (see below), whose sum is σ = 111407304. Its totient is φ = 19166784.

The previous prime is 47917013. The next prime is 47917043. The reversal of 47917040 is 4071974.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 47916988 and 47917006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47917043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299402 + ... + 299561.

Almost surely, 2^47917040 is an apocalyptic number.

47917040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47917040 is an abundant number, since it is smaller than the sum of its proper divisors (63490264).

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

47917040 is a wasteful number, since it uses less digits than its factorization.

47917040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598976 (or 598970 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 47917040 is about 6922.2135188103. The cubic root of 47917040 is about 363.2146251558.

The spelling of 47917040 in words is "forty-seven million, nine hundred seventeen thousand, forty".