47169920 has 64 divisors (see below), whose sum is σ = 128887200. Its totient is φ = 16171008.

The previous prime is 47169907. The next prime is 47169923. The reversal of 47169920 is 2996174.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47169923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 785 + ... + 9744.

Almost surely, 2^47169920 is an apocalyptic number.

47169920 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 47169920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64443600).

47169920 is an abundant number, since it is smaller than the sum of its proper divisors (81717280).

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

47169920 is a wasteful number, since it uses less digits than its factorization.

47169920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10555 (or 10543 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 47169920 is about 6868.0361093984. The cubic root of 47169920 is about 361.3169868953.

The spelling of 47169920 in words is "forty-seven million, one hundred sixty-nine thousand, nine hundred twenty".