47388240 has 200 divisors, whose sum is σ = 168524928. Its totient is φ = 12337920.

The previous prime is 47388227. The next prime is 47388241. The reversal of 47388240 is 4288374.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 47388195 and 47388204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47388241) 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 39 ways as a sum of consecutive naturals, for example, 460029 + ... + 460131.

Almost surely, 2^47388240 is an apocalyptic number.

47388240 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 47388240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84262464).

47388240 is an abundant number, since it is smaller than the sum of its proper divisors (121136688).

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

47388240 is a wasteful number, since it uses less digits than its factorization.

47388240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 47388240 is about 6883.9116786897. The cubic root of 47388240 is about 361.8735657276.

The spelling of 47388240 in words is "forty-seven million, three hundred eighty-eight thousand, two hundred forty".