47138952 has 32 divisors (see below), whose sum is σ = 134683200. Its totient is φ = 13468224.

The previous prime is 47138951. The next prime is 47138969. The reversal of 47138952 is 25983174.

It is a self number, because there is not a number n which added to its sum of digits gives 47138952.

It is not an unprimeable number, because it can be changed into a prime (47138951) 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 7 ways as a sum of consecutive naturals, for example, 140127 + ... + 140462.

It is an arithmetic number, because the mean of its divisors is an integer number (4208850).

Almost surely, 2^47138952 is an apocalyptic number.

47138952 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

47138952 is an abundant number, since it is smaller than the sum of its proper divisors (87544248).

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

47138952 is a wasteful number, since it uses less digits than its factorization.

47138952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280605 (or 280601 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 47138952 is about 6865.7812374121. The cubic root of 47138952 is about 361.2378989653.

The spelling of 47138952 in words is "forty-seven million, one hundred thirty-eight thousand, nine hundred fifty-two".