47148940 has 24 divisors (see below), whose sum is σ = 99141840. Its totient is φ = 18835008.

The previous prime is 47148917. The next prime is 47148953. The reversal of 47148940 is 4984174.

It is a self number, because there is not a number n which added to its sum of digits gives 47148940.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29071 + ... + 30649.

It is an arithmetic number, because the mean of its divisors is an integer number (4130910).

Almost surely, 2^47148940 is an apocalyptic number.

It is an amenable number.

47148940 is an abundant number, since it is smaller than the sum of its proper divisors (51992900).

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

47148940 is a wasteful number, since it uses less digits than its factorization.

47148940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081 (or 3079 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 47148940 is about 6866.5085742319. The cubic root of 47148940 is about 361.2634107001.

The spelling of 47148940 in words is "forty-seven million, one hundred forty-eight thousand, nine hundred forty".