47387880 has 96 divisors (see below), whose sum is σ = 155282400. Its totient is φ = 12532608.

The previous prime is 47387867. The next prime is 47387897. The reversal of 47387880 is 8878374.

It is a super-2 number, since 2×47387880² = 4491222341788800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49567 + ... + 50513.

It is an arithmetic number, because the mean of its divisors is an integer number (1617525).

Almost surely, 2^47387880 is an apocalyptic number.

47387880 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 47387880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77641200).

47387880 is an abundant number, since it is smaller than the sum of its proper divisors (107894520).

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

47387880 is a wasteful number, since it uses less digits than its factorization.

47387880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103 (or 1096 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 47387880 is about 6883.8855307159. The cubic root of 47387880 is about 361.8726493623.

The spelling of 47387880 in words is "forty-seven million, three hundred eighty-seven thousand, eight hundred eighty".