47391400 has 48 divisors (see below), whose sum is σ = 125929440. Its totient is φ = 16248000.

The previous prime is 47391397. The next prime is 47391401. The reversal of 47391400 is 419374.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (47391401) 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 11 ways as a sum of consecutive naturals, for example, 15526 + ... + 18325.

It is an arithmetic number, because the mean of its divisors is an integer number (2623530).

Almost surely, 2^47391400 is an apocalyptic number.

47391400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47391400 is an abundant number, since it is smaller than the sum of its proper divisors (78538040).

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

47391400 is a wasteful number, since it uses less digits than its factorization.

47391400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33874 (or 33865 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 47391400 is about 6884.1411955305. The cubic root of 47391400 is about 361.8816091793.

The spelling of 47391400 in words is "forty-seven million, three hundred ninety-one thousand, four hundred".