47955138 has 64 divisors (see below), whose sum is σ = 124803072. Its totient is φ = 11911680.

The previous prime is 47955121. The next prime is 47955169. The reversal of 47955138 is 83155974.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 47955138.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8370 + ... + 12882.

It is an arithmetic number, because the mean of its divisors is an integer number (1950048).

Almost surely, 2^47955138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47955138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62401536).

47955138 is an abundant number, since it is smaller than the sum of its proper divisors (76847934).

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

47955138 is a wasteful number, since it uses less digits than its factorization.

47955138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4559.

The product of its digits is 151200, while the sum is 42.

The square root of 47955138 is about 6924.9648374559. The cubic root of 47955138 is about 363.3108615192.

The spelling of 47955138 in words is "forty-seven million, nine hundred fifty-five thousand, one hundred thirty-eight".