47001800 has 24 divisors (see below), whose sum is σ = 109279650. Its totient is φ = 18800640.

The previous prime is 47001793. The next prime is 47001817. The reversal of 47001800 is 810074.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 37625956 + 9375844 = 6134^2 + 3062^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 117305 + ... + 117704.

Almost surely, 2^47001800 is an apocalyptic number.

47001800 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47001800 is an abundant number, since it is smaller than the sum of its proper divisors (62277850).

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

47001800 is a wasteful number, since it uses less digits than its factorization.

47001800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235025 (or 235016 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 47001800 is about 6855.7858776365. The cubic root of 47001800 is about 360.8872149671.

Adding to 47001800 its reverse (810074), we get a palindrome (47811874).

The spelling of 47001800 in words is "forty-seven million, one thousand, eight hundred".