47394920 has 32 divisors (see below), whose sum is σ = 106936200. Its totient is φ = 18905088.

The previous prime is 47394913. The next prime is 47394923. The reversal of 47394920 is 2949374.

It can be written as a sum of positive squares in 4 ways, for example, as 38763076 + 8631844 = 6226^2 + 2938^2 .

It is not an unprimeable number, because it can be changed into a prime (47394923) 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, 14912 + ... + 17808.

Almost surely, 2^47394920 is an apocalyptic number.

47394920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47394920 is an abundant number, since it is smaller than the sum of its proper divisors (59541280).

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

47394920 is a wasteful number, since it uses less digits than its factorization.

47394920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3317 (or 3313 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 47394920 is about 6884.3968508505. The cubic root of 47394920 is about 361.8905685525.

The spelling of 47394920 in words is "forty-seven million, three hundred ninety-four thousand, nine hundred twenty".